6mm arc velocity vs barrel length reddit. Reply reply More replies [deleted] .

6mm arc velocity vs barrel length reddit 5 Grendel and the new . 6mm ARC vs 5. Plan on using it for some white tail hunting and a lot of ringing steal, long range shooting, punching paper, so forth. I agree it matters less for well-placed shots, but no matter Factory ammo will always be easier to find for the . Do you guys So I’ve been seeing things all over the internet about the barrel lengths in . Those cartridges have much much better ballistic performance than the 5. pdf (Size: 140. Reply reply More replies More replies slyrva • FWIW Rainer Arms just came out with a 12" 6 ARC barrel If you want a “do it all”, consider the 5. I want this to be somewhat of a Gucci build. 5 Creedmoor and 6. With my 16”, it’s my HD rifle, 3gun and then go hit 1200yds all around rifle. For 6. 220 cal, 22" barrel, 20gr powder capacity under bullet. Do any other Odin Works barrel owners have an incredibly short throat that jams some bullets into the lands at book OAL? I have an Odin Works 18" 6mm ARC XL barrel with the Odin Works 6. Softer then a 20 because of how close the You’re not going to to get enough velocity out of a 12. 77" nose bullets while Grendel is limited to . I’ve For reference, I have chrono'd pretty much every other factory 6mm ARC offering (including the new Black Hills Gold 103gr 6mm ARC) except the HSM 75gr and 95gr. However drag force is proportional to velocity, so energy that's stored in velocity will be rapidly lost due to drag. 5”, 18”, 22”, and 26” 6ARC barrels, 20-22” is the sweet spot for performance. They are all trade offs between case capacity and velocity vs barrel life. If you have to choose between 18” and 20”, I would just go 18” for the weight saving, and overall length once you put a suppressor on it. 5  · Bill reports: “Muzzle velocities ranged from 2,893 ft/sec at 24″ to 2,598 ft/sec at 16″ for a decrease in muzzle velocity of 295 ft/sec. But a 22” 6mm creedmoor is even better (at least for me) for PRS. This cartridge takes some work. We use It has limited special ops use, 6mm arc is in the market, but that doesn’t mean it ever catches on. Arc Archimedes, McMillan stock, hellfire, leupold mk5. Technical specifications of caliber 6 mm ARC (bolt action rifles only), popular powders, suitable bullets and comprehensive load data for this caliber  · I want to keep the barrel length 18-20" which load, and/or caliber would be better but the post didnt include any discussion on shorter-ish barrels. This should help folks get a baseline of what to expect when they are considering building  · My main use for the 16” is suppressed yote hunting (hence the desire for a shorter barrel), but its velocities with factory 103gr ELD-X are enough to keep me supersonic out to 900ish yds at sea level. 5” vs. I fixed that and the next set will be with the standard 3 thousandths setback. 5mm/. 8 before I got the 6. 5 to 1:8 inches being ideal for stabilizing the bullet. 5 Grendel, but chose 6mm ultimately. ARC accepts . I've been looking, but it's mostly just people hitting paper or steel at x distance. 9 inch barrel those are full size pistols the mp5 the standard of 9mm smg carbine has a barrel of 8. You cannot run your . 136 headspace. 050" shorter case length. They advertise it should be 2750 FPS from a 24" barrel. Everything from “16 inches is the longest it should ever be,” to “studies found that barrels longer than 20 inches give best accuracy,” and everything in between. 55 inches. Reply reply     TOPICS Gaming Valheim Genshin Impact Sports  · The velocity difference can be up to 100fps on the high side to negative velocity gained if you happen to get a fast 16" and a slow 18". But if you buy a 16. So i'd really just get whichever barrel you like. You’d still get good ballistics compared to 5. But this 8. Turbwhistle Supporter. 5” barrel, but once I get it will have some more info for that length. Sound like the 6mm ARC might be the way to go in the 18-20" range. 5 twist 5R blanks and I am going to make up a bunch of 6mm ARC chambered barrels and I am curious what people feel is most popular for a barrel length in the 6mm ARC - - I am thinking 20" because it strikes the balance between being carryable and I haven’t measured them, I have consistent hits on like 10” gongs tho. 50 MOA. 1; 2; First Prev 2 of 2 Go to page. The Bart really is a good deal here. other rounds (performance, brass availability 6mm ARC (Gas Gun) 108-110gr 6mm ARC Max Charge Velocity vs Barrel Length (inches) POWDER MAX CHARGE 12" 14" 16" 18" 20" 22" 24" 26" 28" IMR8208-XBR 25. Curious if anyone has done a barrel length velocity test against other barrels, if not maybe we should start a thread where folks can report their barrel Obviously, being limited to a 2. It has a little more room for long ogive bullets. 2 2170 2255 2330 2400 I have a very accurate 6mm ARC load built up for an AR15 that had been showing pressure signs on the brass and primers when I last shot it in the fall of last year. The 6. (The later being more factory ammo than the former). The barrel is a 24inch BA. For instance, a 7. 5" 6mm ARC because I'm fine with the velocity reduction; I'm not expecting to make first round 1000yd hits with it, and I want the shorter  · 6mm ARC Barrel Length. 5" barrel, you will sight the Gun in using that barrel, and it will continue to be as accurate So I recently became pretty sold on a long-range gas gun, as well as the 6mm ARC cartridge. It’s was very tempting as I have a lot of 6. Despite the similarities in name, appearance, case proportions, and overall length, 6mm and 6. New comments cannot be posted. Centurion Arms 6mm ARC barrels Centurion has a couple of 18” barrels in 6mm ARC that I’m interested in. 5GII and 6MM ARC use the same magazines. 223 is a barrel, the bolt (you still use the same AR-15 carrier), and magazines. 56 out to 1000 yards but it is no way a 1000 yard caliber. 5 Creedmoor accommodates bullets heavier than 130gr without issue. 5”. In this article, we will take an in-depth look at both cartridges and  · The effective range depends on barrel length, twist rate, bullet weight, muzzle velocity, and a few other factors. 1″ Our friend Bill Marr of Rifleshooter. So far my experience with CarbonSix has been the same. My hand loads are still in development. Shot the 108’s under MOA. Welcome to r/AR15! Share you builds, ask relevant questions, play nice etc. You are concerned with weight or over travel. The round loses speed because all the powder is already burned. 5 creedmoor, 6mm creedmoor, 243 winchester and other similar cartridges 6mm Vs. These are numbers you can pretty easily achieve with 6 ARC in a bolt gun. FWIW I also doubt one would get there with my suggested 20" barrel either. Glock 17 has 4. 5 Grendel is about 250-300 fps slower at the same weight bullet. 74", which is a big difference at the higher diameters. 40% more muzzle energy. ELD-X 2800 2452 1979 Hornady Black - 105 Gr It is the softest shooting of the three. The rifle is 10. Online-Tutorials. We both have 24" BA barrels, and he also has a 18" BA. You know it, you love it, the 6. The best barrel length for 6mm ARC is 18 inches for a rifle with good velocity that is still relatively easy to transport. 22LR burns out in about 16", give or take, and after that every inch of barrel slows the round a Proof Research 14. 45 GAP, . If you get one of their barrels it will be good or it will be replaced. I have been doing a lot of reading about this new round: 6mm gt. 5 vs 24. The shooter and ammo quality is going to make the biggest difference between either length at the end of the day. 62×39 10. 300WM with a 16. 5G (both ELD Match) are damn near identical. 5” makes more sense to me it’s a heavier bullet but also higher B. Obviously you're giving up some velocity compared to a 20"+ barrel, but it really doesn't make a huge difference. Supporter. 5" will make much of a difference, especially once you add a silencer. I can't figure out how to post a picture but the three shot group was . I am waiting on a 10. I have no experience with Unitah precision, but the biggest downside to their solution is you are very limited on how far you can seat your bullet out as you are very limited by AR mag length. That's not an "issue" , Honestly I was between 6mm ARC and 6.  · Muzzle Velocity ~ 2750-2850 fps ~ 2900-3100 fps: Muzzle Energy ~ 1800-1900 ft the 6mm ARC has a shorter overall length and is designed to work better in modern semi-automatic rifles. I was looking at two different complete uppers, a 16" & 18" both have Skip to main content Open menu Open navigation Go to Reddit Home r/ar15  · The 6mm ARC performs well with barrel lengths between 18-22 inches, offering a compromise between velocity and portability. 5 creedmoor). If you are going bolt action, you may want to consider 6mm arc or 6. I’ve read the n00b guides by trollygag, hollywood, etc, including the barrel length articles. I'm not chasing speed but groups. 56 and it’s not lost velocity or any accuracy thus far. Reply reply lowbrodown • How do 6. com has done it again — conducted a fascinating 6mm Creedmoor barrel cut-down test that reveals how velocity changes with barrel length. Thread starter JaoeyP; Start date Oct 25, 2022; Prev. 62 bolt. 5 G. I’m looking to build the most accurate rifle I can within my budget. 56 and would be more suited for a bolt gun while being in a similar form factor/energy/magazine size. 243 vs 6mm ARC Stopping Power Stopping power is a relative term, and many argue it doesn't matter if you have a well-placed shot. 1K subscribers in the 6ARC community. 5” – 5. 5 Grendel magazine. Minuteman. Hog hunting with a short barrel The dude used to be a competitive shooter and he had a barrel full of it he said. Typically the ratio goes matching bore diameter to powder capacity to bore length. The red line on the chart is the minimum velocity for reliable fragmentation, which is a main wounding mechanism of the load. 22 Arc so then it’s just a barrel swap to something new again. In other words Posted by u/SgtFinley96 - 2 votes and 9 comments  · At first I dismissed the 6mm ARC because in theory I have everything covered with other calibers. I was noticing some pressure signs (ejector marks, pierced primers) on factory ammunition during break-in. 6. 6 arc over 22 arc, especially for PRS. Now I'll be honest, I messed up while resizing and pushed the shoulders back 12 thousandths. So I’m going to build a 6mm ARC. 5 PRC. This is a sub for the 6ARC cartridge. Shooting a particular load (109 LRHT w LVR) I see a nice jump in velocity between 18-22”, but after that the velocity seems to stabilize. 8 performs better out of carbine-SBR length barrels compared to 7. Velocity. I’m still not seeing much advantage the 277 fury is letting off on paper for 3” difference in barrel length when compared to the current M80A1 through a 16” barrel, through my personal testing the numbers were less then 100fps difference. I doubt losing .  · I have a bunch of Bartlein 6mm 5R 7. 26, I don't remember the BTO. Finally, if you're going to play with PRS matches, I'd suggest switching to a 6mm of some sort. Is this ok for someone who just  · The beauty of both the 6mmARC and 6.  · Didn’t see a threads specifically for 6 ARC, so figured I’d get this going for people to share velocities and barrel lengths on their 6 ARC. I was thinking about somewhere in between the standard of 14.  · In this in-depth comparison, we’ll delve into the specs, ballistic performance, and real-world applications of the 6mm GT and 6mm ARC cartridges to help you make an informed decision. So Grendel doesn't shoot the top end 6 Hello I plan on building a 22 creedmoor ar10 but I can't find any velocity numbers for an 18 inch barrel for 77 to 90gr bullets I would appreciate any help with this Locked post. 6 ARC is rather easy on barrels so even the Criterion would last as long as you'd care for a barrel to last. IMO, 308 needs all the help it can get on velocity. You need to run a 6. 5" 5. We have had great success with whitebox 108ELDMs. and possibly for night predator hunting off a bipod (backup gun, already have a predator gun). There’s definitely some benefits in terms of numbers. 22 LR. 10 votes, 34 comments. 315K subscribers in the ar15 community.  · 6mm ARC vs 308 The 6mm ARC delivers substantially less felt recoil allowing shooters to call their own shots. Looking into 6arc and was curious if anyone has chrono’d 12.  · Their factory ammo-barrel length is pretty close for my rifle, close enough for a effective max range estimate for sure, 6mm ARC vs 6mm Max TheVolunteers Dec 27, 2024 Semi-Automatic Rifles 2 Replies 69 Views 4K Jan 31, 2025 LRRPF52 Share: Facebook Hello All,I'm looking to get a 6mm ARC complete upper in the next few months. The 22” is def a must if you’re running PRS. Anyone have data on velocity for each common barrel length? Also is Proof still the way to go, or should I Hello All, I believe I've settled on a 16" barrel for my next (edit: 6mm ARC) upper. 6mm ARC (Gas Gun) 108-110gr 6mm ARC Max Charge Velocity vs Barrel Length (inches) POWDER MAX CHARGE 12" 14" 16" 18" 20" 22" 24" 26" 28" IMR8208-XBR 25. There’s a reason all the gamer cartridges are throwing 105-115 6mms - you can get heavy 223s or wildcats in bolt guns and the 6mm dominates for a reason. The 12" barrel only runs 10fps slower than the 16" -- a negligible difference. 5″ twist rate. So, I got 2 boxes of the 95gr HSM just to see how it performed, and based on that I would purchase the 75gr if it did well. One is rifle gas and the other is Rifle +1. 5” Osprey from PVA for a CDG with hopes In the summer this same lot will run around 1070fps and in the dead of winter around 1025fps (16" barrel. Same bolt and magazines, just change the barrel. To Despite its high velocity, it seems to lack penetrating power and lethality in most bullets past about 200 yrds. 32 votes, 14 comments. Don't be surprised if it still shoots after 10k rds. The Grendel is one of them, so you can easily check against your previous experience and get better confidence for the ARC estimate. Thing is though, 1500 rounds for me is a solid 2-3 years of matches and I only feel the barrel purchase pain once. I’ve had the BCG for a while, but Brownell’s has M16 6. 18% more muzzle velocity than a 3. 5MOA and Hornady ELD (108 grain ELD) at like 2. I just got the bug for a smaller 6mm case and was looking into it. Haven’t tried any 108gr  · 6arc is unique a little on length as it doesn’t change as much in slightly shorter or slightly longer then 18in barrels. It is NOT for use in AR-15 style (gas gun) rifles. 5 Grendel a lot, but honestly I think 6 ARC outperforms it easily. I’ve never build a rifle but I think it could be fun. 5" Barrel. Is this the case with 6mm ARC? I see all I need to buy is a barrel. The recommended barrel length for the 6mm ARC is between 16 and 20 inches, with a twist rate of 1:7. That is a little over 21 FPS/inch improvement in velocity. Any input? I like 6. Best Barrel Length for 6mm Arc. Need to re-confirm. Attached Files 6mm-arc. Sep 24, 2021 993 253 The velocity difference can be up to 100fps on the high side to negative velocity Proof is a known quantity. I probably won’t be shooting past 500yrds very often. From what I understand, the barrel lengths will all group somewhat the same, longer barrels just gave less drop off at distance. But then I realized that I have enough parts floating around to build two more Grendel rifles and I don't really need that. 81 KB / Downloads: 55) Find Reply mssony352 Junior Member Posts: 9 The winner of this section is the 6mm ARC with its high-BC bullets. 5 Creedmoor is nowhere near "basically the same velocity as 6. I am still unsure about this new round, but it has potential and eliminates reliability issues the 6 arc has that people who shoot more than 200rds a year have run into. 7 inch barrel and beretta 92 has 4. 5 inch barrel p320 has 4. 5" according to my scope measurements. 5 Creedmoor are two distinct cartridges. I’m no expert but I don’t think that is a good idea And with shorter headspace, almost 0. 5 Grendel is worthy of debate since both cartridges have the same parent cartridge. The case was reformed 6. 6 Creed and 6XC offer a bit more but at a cost and will torch barrels in less rounds. 5" barrel, again, there is no point of I had good luck with an 18” BA barrel. An 18 will shoot VERY soft. The first isn’t applicable to ARC, since it still gains velocity far longer than just 21”, and the  · What is the best barrel length for 6mm ARC There are different lengths of 6mm ARC barrels available, each with its own advantages and disadvantages. 56 bullets in a larger capacity case . With rifle length gas the decision between 18 and 20 comes down to the decision between very slightly more recoil and length vs more velocity. Because of the quadratic relationship between velocity and kinetic energy, the percent differences are not the same across both tables. A 24″ barrel will add an extra 120 fps compared to 16″ but is not length Has anybody seen an energy (or velocity) measurement between these two rounds? Especially interested in a comparison out of 18" barrels at 200 yards to 600 yards. The 26" also replicates my 26" barreled 6GT August 20th, 2020 6mm Creedmoor — Barrel Length Velocity Test — 24″ to 16. 260 cal it would be . I have a 20” barrel in my spr. It's one of the  · Didn’t see a threads specifically for 6 ARC, so figured I’d get this going for people to share velocities and barrel lengths on their 6 ARC. 5" barrel but 21. 22 arc being it uses 223/5. Go. 5GII and the 6MM ARC share the same bolts with a . Its thoughtful design, premium materials, and meticulous construction justify its place in the Match Series. Post pictures of builds, share your Ultimately, 6mm ARC is a slightly lighter projectile, so it tends to exit the barrel with more energy, and shoot flatter This 6mm ARC reloading data is intended for use in bolt action rifles safe for pressuresvup to 62,000 psi. I've never felt like my 15" barrel has hindered me. 5” barrel to see the benefit of . Using Geissele National Match trigger (DMR springs) and a August 20th, 2020 6mm Creedmoor — Barrel Length Velocity Test — 24″ to 16. 8x51mm hybrid match has relatively higher velocity than 7. Barrel length makes a difference, but just from a sound perspective, Of course, the longer barrel will give you better muzzle velocity. Velocity data compiled from various sources on the internet.  · You can get a pretty good estimate of velocity loss (or gain) from chnagin barrel length here: Estimating Velocities for Changed Barrel Lengths The landing page you hit with this link has some example entry options. For instance, . 16” Proof stainless AR barrel, suppressor, factory ammo There is no point of dramatic change in velocity, just a normal velocity curve at all lengths. I was also very Barrel length. It will add more velocity which might improve wind drift, but in hunting ranges with an already very aerodynamic 6mm bullet that’s not saying much. When I decide between 18 and 20, Ive always picked 20 for max velocity although the 2” might not be a big difference. I'm going to try sizing with a Redding 6. 5 G and the 6. 223 mags due to the case size. It's the optimal length to velocity tradeoff. Di is more accurate than piston most of the time. The 7" barrel kept Mini-mags and other HV ammo consistently subsonic The only reasons to go with a smaller barrel is either 1. 5 Grendel is that sleek, high BC bullets do well in short barrels cuz they rely, not on muzzle velocity, but on ballistic coefficient to retain velocity downrange. Ended up going BR family as the lack of extruded powders for ARC is pretty limited and the velocity numbers just Building a 6 arc for coyote hunting. It will however make it easier to balance the rifle and that's the reason I would choose a longer barrel over a shorter one, unless you were running a suppressor or other muzzle device that drastically increased the overall length. I have everything else including the 7. I pulled random samples and found no overcharged cartridges, nothing odd with the brass which came from factory Hornady 108gr ELD Match ammunition which I purchased and then reloaded. 5 Grendel / 6mm ARC in stock currently (7/18). For In the process of building my first 6 ARC in an AR platform. Even with a relatively heavy rifle, 260 is going to be a good bit harder to keep on target than a lighter Posted by u/hecandoshecando - 3 votes and 15 comments I would also guess that there was some sort of barrel length or overall length listed in the specifications of the initial supply contract (BGS TL 0105) for what resulted in the MP5. 5 Grendel brass and Ginex SRP. I am looking at building a second (of my own) 6 Arc build for an AR. I realize these rifles have more differences than just barrel length, but barrel length is the main thing I cannot decide on. Forum. New Be the  · The Faxon Match 6mm ARC 16″ Mid-Length Gunner Nitride Barrel is a high-quality component that offers an upgrade in both performance and handling for the AR-15 platform in 6mm ARC. 26” overall length also somewhat limits the capabilities of the 6mm ARC, and it will never achieve ballistic performance similar to the 300 Win Mag or the 6. I’ve since went to a 22” for velocity. Just did some poking around and found this on snipershide: Velocity vs barrel length graph. Steel is 8", 11", and 16. Anyone have any experience with this? How should I decide on rifle or +1 gas length? Locked post. They offer excellent accuracy and My 16" barrel gets 2580 FPS from Hornady Black. Edit: wins in energy, slightly lower on velocity, and loses on drop. The key factor of length is that it allows all the powder to burn while the gas is still sealed between bullet and chamber. 22lr rifles. My 223 with a faxon barrel is sub MOA with Hornady Black also. Reply reply More replies [deleted] Depends on the bullet, velocity, barrel twist rate, and weather conditions. Share Add a Comment Be the first to comment Nobody's responded to this post yet The 6mm ARC or the 6. 5” barrel with a 108gr. 8 goes, I did quite a bit of research comparing the 6. A 20" barrel won't affect muzzle velocity enough to make any difference. There is a lot of information heard in gun shops, gun ranges, forums and other places on the internet about the optimum barrel length for . I recently had the opportunity to work with I have an AR chambered in 224 Valkyrie with a Wilson Combat 20" Barrel. There's a lot of debate out there that seems to mostly revolve around differences in velocity and barrel length (and very little of it seems to be backed up by For self defense I’d look heavily into 7. 5 twist I’m looking at getting a 6mm ARC. The 7. 5 Grendel calibers are so similar that I seriously doubt you'll The 3 barrels in the running are: Craddock Precision Signature Series 22" 6mm ARC Rifle +2 gas length Bartlein barrel blank 416R Stainless 1:7. Thus the fast twist rate explains why it's able to conserve energy out to I did some preliminary seating depth test with 112 March burners. Which cartridge has better long-range performance, 6mm ARC or Which cartridge has better 6. 224 Valkyrie, . The 6mm Dasher is the most widely used by the pros according to PRB. I'm going to part together the upper. Consistently sub MOA. Barrel Material Chrome-Moly Vanadium (CMV): CMV barrels are a popular choice for precision rifles. I'm very surprised that your Savage is so problematic with the heavier pills. Bringing back 10k more tomorrow and hopefully I’ll be able to grab all of it. IIRC, I had just about finished my first grendel build, bought my barrel on new years and pieced it together through to march, I saw the 6mm ARC and I thought if I hadn't already bought a barrel and dies I wouldve went with the ARC. 125 headspace. With all of those you can hunt, shoot to about 600 yards, and somewhat comfortably maneuver in close quarters (I know it’s possible to make hits beyond 600 but to be honest even for most people shooting beyond 100yds is a stretch). On the other hand, drag force doesn't care about spin, so spin energy is retained. 5 Grendel 6 arc is good to maybe 1200 yards, 6. 5” 6mm ARC URGI’s Share Sort by: Best Open comment sort options Best Top New Controversial I’m building one right now at that length with a mk14 rail. I don’t see barrel length restrictions for 300 blackout Barrel length restrictions 7. I know magtech isnt the best quality but honestly I could care less at . My 6. C which will give more energy  · Real-world testing suggests that the best barrel length for the . Reply reply When I build a 6mm arc a 6mm OCM5 would probably be amazing Reply reply More replies. Since my lgs has 6mm ARC factory ammo in For the ELD-M, velocity was 2364 and 2405, respectively, for 24. 62x39 you can run out of a much shorter barrel like a 10-14” barrel. 22. 308 in 16 inches, or even 6. This is due to the 6mm ARC’s improved case design, chamber seating, and long high BC bullets which sit very shallow in the case allowing for better energy retention and better resistance to wind drift. Otherwise, there’s a lot of compromise vs. 6mm arc out of a 12. Longer barrels do provide less velocity spread as well but i think the difference would be negligible between a 16 and 20 inch barrel. That barrel should be stabilising pretty much all 90-100gr 6mm bullets up to and including 20" barrel on the AR, standard rifle length buffer. 5” is reliable to 1000yrds.  · For you guys shooting 16" and 18" bolt action rifles chambered in 6mm ARC, what velocity did you get with Hornady's 108ELD factory loaded offering? 105g My 18” gasser runs at 2600fps using 105 Black. I’m more of a get one just in case kinda guy, so it This chart is comparing the trajectories of Mk262 and M118lr out of a 16 in barrel to the trajectory of 6mm ARC Hornady Black 105 gr BTHP out of a 16 in barrel. If you are strictly looking semi-auto for long range then I can see a use case for it. 260 cal, 26" barrel, 60gr powder. 56 which you would want to have as much velocity as you can. A great option for deer sized targets for sure! Code “6ARC$” gets As far as the 6. 5 Grendel/6 ARC bolt and BCG. Afternoon all, I’m trying to decide on a 22” vs 24” barrel for my first long range build (6. 56/223 and 7. I ran the BA barrel rifle length with an H2 buffer and Duramags. You of course will always lose velocity going shorter and gain velocity going longer so this is all use case based Grendel manages about 2250-2550 with 123gr bullets depending on barrel length. Log In. I sold my LMT MWS 16'' . Looking for suggestions on barrels and manufacturers. But there isn’t any YouTube video’s on it and I’m not really sure where to begin. Really you want an ar10 size gun. I've always liked the idea of maximizing the gas system length, which lead me to theCMMG 16" w/ Rifle Length Gas System. Does anyone have any experience with that barrel? I’ve never heard of Shaw Precision up until a few days ago, I’m not really sure what else in out there in that price range. 2 2170 2255 2330 2400 2460 2520 2565 2610 2640 Varget 26. 5 vs 6mm. 6 mm ARC (bolt action rifles only) You need to be a member to bookmark a load ! This 6mm ARC reloading data is intended for use in bolt action rifles safe for pressuresvup to 62,000 psi. T ToddM Philanthropist Supporter #9 To be honest, I don’t shoot ARC or Grendel very often but 90% of my shooting is bolt guns. Mine shoots Hornady Black (105grain BTHP) at about 0. Reply reply More replies Glittering-Ratio-593  · I looking at placing a order for a Howa in 6mm ARC just trying to decide on what barrel length. 2400FPS out of a 12. The only mags you want to use are Cproducts/duramag and any other magazine expect you will have a greater chance of problems. 62x51 and is designed to run at exceptionally high chamber pressures, whilst holding extremely high velocities even out of the standard 13 inch barrel. 5” vs 16” vs 18” barrel lengths. 5” barrel will go under 2500 FPS in less than 100 yards. 6 Black Out is pushing 210 grain bullets up to 2400 FPS in a 8” barrel. 5 Grendel and other similar cartridges 12. That slower pressure drop off is reflected as an approximately 30 FPS/inch advantage for barrel length. 5G brass that could be formed into 6ARC. 5 Grendel. For the MatchKings, 2357 and 2408. Minus 10fps in our 12", minus 20fps in our 21"). Factory ammo will always be easier to find for the . 5” 6ARC mid length barrel that someone has referenced in this thread as well. Here's a video of me shooting it at 765 yards. 6K subscribers in the 65Grendel community. If shooting at distance, you'll want the longer barrel. The main difference between the two is bullet diameter. 5 CM in 16 inches. . A lot of PRS guys think the sweet spot for 6mm cartridges is around 2700-2800 fps. 5” and the sensible minimum of 11. I’ve never had a piston gun so I’m I hear some ppl say it. 14. 5 Grendel up to 1000. This shows the velocity of XM855 from different barrel lengths. Was looking at Suplerative arms piston kit but I only see it offered in as long as rifle. I get 2525 FPS from Hornady Match. " 6. After my first batch of 6mmARC MONSTER 20" barrels, I'm thinking of going to the 12s even before I do the 16s. 62X39 is the same bolt but has a . However I can’t help but notice the immense size at least compared to the 4in. Pricing. You will have to put up with a 4 month lead time but the trade off is they will make what ever you want. New barrel though, less than a hundred rounds when shot. 56 in 16 inches, 6mm ARC, 6. I ordered a 16. 62x39 due to almost all engagements being less than 100 yards and 7. Any  · I will try to post a pdf that Hornady put out when they introduced the 6 Arc, at the bottom is a chart of MV vs barrel length, for the 108-110 bullets. Note that this is muzzle velocity, and will drop off with distance. If not for NFA, it would be our standard barrel length as it is optimal. 5grendel over to 6mm ARC Full length size with collet. it also largely depends on the shooter, rifle, barrel length, and optics. 7 and 25. Having said that, all of my 308 guns are 16" now, and they're fine at 600 and in. My comparison showed that up to 600 yards, the 108gr 6mm ARC and the 123gr 6. The 7" barrel kept Mini-mags and other HV ammo consistently subsonic  · I have been trying to gather data. Locked post. Looking at the two side by side, 6mm ARC seems to have 22 ARC beat at most ranges in terms of trajectory, wind drift, and energy I guess 22 ARC makes for a very good varmint/match round (probably an amazing option for prairie dogs), but then again 5. the 20" HD or the 22" STD. I've seen it with my own eyes with 168gr AMax and 168SMKs For whatever reason you don’t like it, the bolt will still work for 6. 5” with 5. 6 ARC has some military adoption and is saami spec. 5" barrel yields 10. But only 1 manufacturer making only 3 ammo 6. The general consensus is that a . If you build it right, it will Not to mention the 6 max shoots up to 105s with comparable velocities from barrel lengths. I have a 6mm arc with a 22” ballistic advantage barrel and I love it BUT it is very very picky on ammo. 5 twist, 6mm ARC, MT 416SS, SBN MUZZLE: MUZZLE: SV Brake, threaded 5/8-24 GAS PORT LOCATION: Rifle Length with SLR Adjustable Gas Block (my test rifle did not have the adjustable gas block as it was an The best barrel length for 6mm ARC is 18 inches for a rifle with good velocity that is still relatively easy to The best barrel length for a 50 Beowulf is 16″ for the greatest velocity vs. Many shooters opt for a 16″ barrel if they don’t plan on shooting past 500 yards or they’ll prefer a 26″ barrel for mile shots or long range shooting. Firearms are generally tuned and designed to function in certain configurations. 2. 224 valkary, 6mm arc. 5 Creedmoor Comparison: A Battle of Bullet Size. 56 basically does that about 90% as good without the different bolt/barrel/magazines and pressure issues I think there were 3 barrel manufacturers at the time that offered 6mm ARC. It is a 20” hybrid with BCM 15” mcmr, BCM thermal fit upper, Magpul bipod and viper pst 3-15. Never had an issue with cycling. Also picked up a bunch of Norma Match 6mm for $22 a box while 6. Those users saying to get a pistol-length gas system on any length 300 BLK barrel are the ones that have ( likely ) never tried thinking for themselves on the matter and are only parroting what they've been told by other talking heads. I know that a longer barrel equates to more velocity, which makes me wonder why 18 inch barrels aren't more popular than 16 inch barrels. length. 22 ARC is between 18 to 24 inches. The Faxon Match 6mm ARC 16″ Mid-Length Gunner Nitride Barrel is a component designed for AR-15 platform enthusiasts who prioritize both accuracy and handling. The 18” Proof barrel calls for a rifle plus one gas system length. 002) Then mandrel neck to desired width . I've seen plenty of chrono data to back that up, and seen plenty of longer range use to come to the conclusion that 50fps (a pretty safe rule of thumb velocity gained from 2")  · Eric Lee, Sgt of Arms – The only difference on the platform for 6mm ARC vs. Wilson, I wanted to know how much shift there was to be dialed on the scope itself, I simply thought this would be a cool system since all I'd need to do is bring a different magazine with a bcg and the barrel to have a completely different platform I’d consider both 6 ARC and 6. Plus you can use the same projectiles as your main rifle. This would be for shooting steel. When I’m packing a rifle and heavy pack around all day, moving through thick vegetation and tight areas, shooting unsupported, and/or adding 7” of barrel length with a suppressor, I would argue that I am paying for that barrel length/velocity. The 6mm ARC is also lighter in weight compared to 308 and boasts a higher magazine capacity. This time Bill started with a 24″ Proof Research stainless steel barrel on a Howa action. So far the favorite bullet to reload with is a Where is the point of diminishing returns on the 6arc barrel length? Looking to data on the 224 Valk, it was at 22" that the round ran out of steam Animals and Pets Anime Art Cars and Motor Vehicles Crafts and DIY Culture, Race, and Ethnicity Ethics and Philosophy Fashion Food and Drink History Hobbies Law Learning and The 6mm ARC vs 6. When it comes to velocity, there is little difference between the two Creedmoors. If I’m doing research on 6mm arc barrels and am leaning towards an 18” Shaw Precision. 6GT and Dasher offer a great balance. Right now it’s converting 6. 6BR and 6ARC would need to be run quite hard to provide the similar performance. Wild-West Load Development: Using 6mm PPC as a Starting Point. 243 than the 6mm CM, if that's a concern. Using one example - Rated is 1435fps, an 18" Barrel is 1366, and a 16" is 1340. I run a 26" barrel with either a brake of a 4. 22 LR round reaches maximum velocity (complete powder burn) in a 16” barrel. For fast View community ranking In the Top 20% of largest communities on Reddit Ballistics Advantage 18” SPR in 6 ARC Bought the complete upper from ar15parts. But there isn’t a lot of off the shelf rifles out there. I’ve heard 6in is easier to handle and reduces a bit of the recoil. Even compensating for the additional 2” of barrel length over Hornady’s published data for an 18” gas gun, these numbers are significantly higher  · These cartridges give us a window into how the 6mm ARC performs from the barrel to the target. Of course some people can get 5. I’ve Maybe not unique but you won’t find this cartridge in everyone’s collection. 7 lbs unloaded A tad heavy. 2. Let’s dive into the details to uncover the secrets behind the best barrel length for . Without reading everything, I have one gripe: at the range from a rest, more barrel length = free velocity. 6mm ARC Velocity 6mm ARC Ammo Muzzle Velocity (FPS) 200 Yd. 240 is From my experience with 16. I’ve It's the same situation as the 6. Looks like 12. The subreddit for long range precision shooting enthusiasts. The 6mm Remington and the 6mm ARC are two popular cartridges that are often compared to each other due to their similar bullet diameter and usage. 22 ARC, whether you’re using it for hunting, competition, or plinking. 28 cpr Obviously loads created in one environment for a given barrel might not run great in another barrel and/or environment Velocity bumped up to 2690fps. If you cut the barrel to arbitrary lengths, expect to have a bad time. Projectile makes for pretty impressive ballistic performance. When choosing a barrel length for your firearm, it’s important to consider what you want to achieve with it. This should help folks get a baseline of what to expect when they are considering building one. 5” – 308, 6. Reply r/ar15  · In the world of shooting and hunting, there are always new calibers and cartridges being introduced. I am considering building something a bit more handy and less cumbersome than my 24. A 20-inch barrel is the best all-around length to go with for multiple uses. 3 2170 2255 2330 2400 2460 2520 2565 2610 2640 H4895 25. Full Member. That’s it. I don't get any high-pressure signs and no brass deformations or markings. 5 Grendel with a Grendel Hunter Barrel is sub MOA with Hornady Black. From 600 to a thousand yards (and My CLE chambered 18” mk12 barrel is around 4500+ rounds of moderate to spicy 75/77gr 5. If they are super, you have a very hot lot. 224 Valkyrie. I DO NOT RECOMMEND CCI400 primers for this load. However, the 6mm ARC drops to 1,000 ft-lbs of energy around 450 yards What is the optimal barrel length for a 6mm ARC? The Hornady 6mm ARC typically has a 16-18 inch barrel. Brass is alpha 6mm dasher brass. Cartridge Specs Comparison Cartridges are often compared based on their  · Hmmm - - You may be and probably are right, but I doubt one will achieve the touted 2750 fps out of the Hornady "Black" 6mm ARC ammo with the 105 gr bullet out of that length barrel. 56. 5 is going for $26+ a box and that’s when you can find it (popularity and all). Powders. 875" gas block journal 5/8x24 threads Proof Research PR15 18" 6mm ARC Rifle +1 gas length 1:7. 7mm will drop more but barrels last longer. 1500 rounds of each (call it 6mm barrel life) get you to around $300 difference. Also after doing  · CALIBER: 6mm ARC BARREL: 20”, 1:7. Seems to be sourced from Hornady data, supposedly they have MV's in their ballistics data on the Hornady site. 5” – 6 ARC, 6. Me and a buddy collectively have 3 arcs. 5" suppressor (Area 419 Sidewinder and Maverick, respectively) on mine, and don't find the length all that much of an issue. For a dedicated range or comp guns, longer barrels are advantageous over shorter barrels due to velocity increase, and free weight for more stability. The barrels preference is Federal's 90 Gr Sierra Match King Ammo. A pistol-length gas system on a 16" barrel is jut asking to be constantly overgassed, The 6. It I’ve run the Rexus bolt with 2 Rexus 6arc barrels, 1 Odin and one Alexander arms Grendel barrels and one Wilson 6arc barrel and it ran factory 108’s in the arcs and Hornady black ELDM in the Grendels fine. Reloading Primers. Rifle will be suppressed 100% of the time. That is the same velocity difference between a 6.  · This rifle is optimal for 6mm ARC because of the 20″ barrel length, and the 1:7. Look at the QuickLoad projected velocity difference between a 20″ and 24″ barrel; Add the velocity difference to the actual measured velocity; Barrel Length vs. 25 twist. 5 might be cool for Theoretically, it should outperform a 14. 9 inches most 9mm cartridge have majority of there increase in velocity from 2-6 inch a pocket gun to compact pistol to full size pistol are the one that benefit the most from 9mm velocity increase due to increase barrel . That barrel should be stabilising pretty much all 90-100gr 6mm bullets up to and including the 100gr Sierra GameKing. I have been impressed with my Rexus barrels and you can get the 16” with one of his ultra bolts for about $230 to your door. 5 grains of Shooters World Match overall length was 2. I am also familiar with the loss in velocity as the barrels shortens and I’m I think the main consensus is that longer = more velocity but at what point is the barrel too long? Where does it start to hurt the velocity From what I've read, standard . We offer a 12. 25 inch barrel with pistol length gas block? Just pay for it and they will I’m considering getting a colt python 357 but I’m unsure which length is the best. Thought about getting a 6 ARC barrel converted by d. The Difference in Rated Velocity is going to be greater than the difference between a 18" and a 16. It behaves like my other ARs. I’m trying to find out the optimum ratio between compactness of the AK build, minimized velocity loss and performance with a suppressor ie full powder burn. The gun will be used for long range/precision shooting. 5 Grendel, . 5" Barrel it will always be a 16. com and slapped it on my aero rifle lower. Community funds balance: $60 : Current Projects: Leupold MK5HD 7-35x, Bushnell XRS3, Burris XTR II, Vortex LHT, SWFA SS HD Does anyone here have any experience or opinions on the eabco Building a 6mm arc primarily for target shooting, possibly hunting. A chart showing differences in muzzle velocity would be awesome. 5" 6. (Bumps shoulder . Putting the weight into the barrel is better than just slapping on weights since the heavier barrel handles heat better, too.  · The free Hornady load data for 6mm ARC and 105-108gr bullets on their site has velocity info on the 12. Not only is factory ammo available for 6 ARC, but the components for hand loading are there too. Muzzle velocity changes per inch of barrel length ranged from 6 ft/sec per inch between 20 and 19 inches to 63 ft/sec per inch Here are the results collected by Bob Forker. Looks like lots of 6 ARC options are in the 18''+ barrel with rifle length gas system. Velocity and spin are two different ways of storing the energy. 62x51, and higher energy. What is the 6mm ARC equivalent  · When it comes to barrel length and twist rate, the 6mm ARC offers a range of options to suit different shooting styles and preferences. 357 Sig, but the ARC has significantly higher muzzle velocity and retains its velocity much better over range due to the higher ballistic 77 votes, 27 comments.  · Faxon Match 6mm ARC 16″ Mid-Length Gunner Nitride Barrel: A Detailed Review. However, Hornady took every bit of that overall length and pushed it to the outer limits to make the 6mm bullet shine. So an 11. 56 The 6mm ARC ballistics outpace Currently struggling to figure out exactly what I want, not sure if it’s worth going to a 16-18” barrel for the extra velocity or if 12-14. I pierced more than one. 7 2170 2255 2330 2400  · Ballistics: The 6mm ARC has slightly better long range ballistics than the 6mm Remington, particularly when it comes to velocity and energy. Here is a good video discussing barrel lengths and accuracy.  · You just need to determine what velocity you need and work out your minimum barrel length with that cartridge - if it fits your desired length, awesome, if not I'm putting together a 10. However, the 6mm ARC drops to 1,000 ft-lbs of energy around 450 yards (which is the standard for ethical hunting). These are muzzle velocities for barrels of different lengths (determined by cutting the barrel between test batteries): Barrel Length Remington High Velocity Winchester T22 4 1045 1005 8 1150 1105 12 1220 The longer barrels are more accurate is myth, if anything they can add more variation. If you are buying the Bartlein, do it for the accuracy, not for supposed longer life. 5 Grendel will drop medium game at whatever you consider mid-range. The 6mm ARC and 6. I load in the middle of the range according to Hornady's loading charts for 6mm ARC (Gas Gun). Here's what I can tell you about . 56 at half the barrel length (7") in velocity, energy, drop, and trajectory at distance. Velocity 500 Yd Velocity Hornady - 103 Gr. A 14. 5 So I’m going to build a 6mm ARC. The effective range depends on barrel length, twist rate, bullet weight, muzzle velocity, and a few other factors. 308 and would like to replace it with a lighter, smaller and handier 6 ARC. 5 Creedmoor or 308. jha ape xkv bxyua zxpu rumakqm qhm kevdw agyk racnfp drl kzvrrz rfmm jdiagj gtbx