[10] The 6mm ARC therefore can also be a suitable chambering for shorter "micro-action" bolt-action rifles. And just in case some hunter wanted to knock off a deer with his .244 rifle, the company also offered a 90-grain loading. I doubt that the book on the Great 6mm cartridges is closed, and future developments may add new chapters, to the delight of many shooters. Jeff, I would have it fluted well to reduce weight and chop +/- 20" - with 95 BTs, it will be a deer slayer, varmint bullets for said creatures. This increased size means the 243 has a case capacity of 53-54.8 gr H2O. Long-range precision shooting is one of the fastest-growing segments of the shooting sports. The old 243 Winchester can beat that by about 300 fps. Your email address will not be published. You will not find better quality and consistency when it comes to Lapua. Notify me via e-mail if anyone answers my comment. The 6mm ARC is a medium-power cartridge comparable to the 6.5mm Grendel, but with better ballistics thanks to the greater muzzle velocity achieved by using lighter 6 mm bullets and enough power to make use of the heavy 6 mm bullets. Copyright 2020 SHWAT | All Right Reserved. After consulting Quickload, I also shamelessly lifted Gavins 27 grain VARGET load under 108 ELD-Ms. My Ballistic Advantage barrel is a little different than Gavins. Larue Tactical two-stage, small parts are Seekins, the stock is an LMT. The rifles Barrett supplied for the DoD are top-notch, but they are just a modified REC-7 DI. June 18, 2020 Gavin Reloading Blog 224 Valkyrie, 300 PRC, 6 ARC, 6.5 Creedmoor, 6.5 PRC, 6mm ARC, 6mm ARC Load DAta, 6mm Creedmoor, CMMG AR-15, CMMG Endeavor, CMMG Resolute, Hornady, Long Range AR-15, New Rifle Cartridge, Precision AR-15, QuickDesign Software, QuickLoad Software, Reloading, Reloading 6mm ARC, Reloading Blog, Reloading Press, Reloading Videos, Shooting 6mm ARC, Ultimate Reloader. Facebook; Twitter; Pinterest; Related Articles. Like the grendel though you probably don't want to run high pressures on an ar bolt though. Whats more: Its already SAAMI approved! Would love to get this thing shooting consistently under .5 with enough speed to reliably ring steel at 1000. : 2.095" G1 B.C. SPC, 350 Win. Its a 6mm cartridge similar to 6.5 Grendel, built for the AR-15 platform, Its optimized for bullets in the 103 grain 110 grain range, Its got more velocity and less recoil compared to 6.5 Grendel, It shares the same parent case with 6.5 Grendel: The 220 Russian, Its capable of launching a 6mm 108 grain projectile approximately 2800 FPS from a 24 barrel, BARREL: 20, 1:7.5 twist, 6mm ARC, MT 416SS, SBN, MUZZLE: MUZZLE: SV Brake, threaded 5/8-24, GAS PORT LOCATION: Rifle Length with SLR Adjustable Gas Block, RECEIVER: Forged 7075-T6 AL M4 type upper, AR15 type lower, FINISH: Cerakote Receivers and Hand Guard, Find a cartridge similar to 6mm ARC thats supported in the, Determine the 6mm ARC case capacity for my lot of brass (H2O method), Adjust Quickload model for case capacity and any other factors, Model loads looking at pressures and velocities (using 6mm PPC load data as a backup sanity check), It shares the same parent case with 6mm ARC (the 220 Russian), Its case capacity is very close (1.9 grains of H2O different), Likely in reference to a 24-ish test barrel, No AR gas system present to reduce velocity, Start with observed 20 velocity data for my H-4895 load (2,631 FPS), Look at the QuickLoad projected velocity difference between a 20 and 24 barrel, Add the velocity difference to the actual measured velocity, Account for ~1.18% reduction in velocity (calculated from my 224 Valkyrie AR-Bolt side by side testing) due to the AR-15 gas system, I had limited components available to test, results could get better from here (more velocity with less pressure), These loads may be hotter than what will function reliably in a typical AR-15 (and may not be safe), I will follow up with testing of Hornadys factory ammunition with the 108 grain ELD-M bullet. Posts. Hold for elevation never changed, 4 mils at the top garnered hits at from 4.2-4.7 mils each time, misses were generally wind. Sort by. for decades and have experienced no odd problems with it. Claims for the 6mm ARC are that it is better in every category. 6 BR REM, not 6.5. The biggest differences between the 6mm PPC and the 6mm ARC are the shoulder angle (30 for 6mm PPC, and 40 for 6mm ARC), and the base-to-datum spec for the shoulder (6mm ARC is pushed back further). Campfire Outfitter . The 6mm ARC is a brand new cartridge that Hornady designed to fit into a standard AR-15. Clovered groups were the norm for both. I purchased a 6mm ARC barrel from Brownels when they first came available. was necked up to 6mm and called the 6x47. The suppressor is an X2Devgroup, Orion X. Its short at 6, light at 16 ounces, and has no backpressure eliminating excess gas. Introducing the Silencerco SCO15 Lower Do We Need Another AR-15 Lower? $1.75/Round. Outside a few very special special units, the military gets whats issued. Joined. A new 6mm round blossomed in 2017, and it has already taken a position in the Great category. The 6x45 is the .223 Rem. Will it supplant mainstream calibers? It recoils about 50% less than any long-range 308 Win. In the case of a bolt gun, I'm sure 6ARC would do great but 6BR has quite a few advantages in case/neck dimensions alone. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). The strings netted three or four out of five, misses were off the edge. (Maybe in 6mm ARC? WARNING: The load development techniques and load data shown in this video are experimental and are for DEMONSTRATION PURPOSES ONLY. I to have a precision .224 V and would love to see a real world side be side comparison with the 6 ARC. Its case is bigger and its report louder, but it is deadly effective in the field. if you are going to reload for it and want to shoot light bullets. ), 6mm ARC brass (new), 6.5x47 (New) Sierra 6mm Gamechanger 90gr and 6.5 130gr Gamechanger, Update on my BadRock 6mm ARC bolt gun and new Hornady Podcast, Custom 700 in 6mm Norma BR (ARC, Timney, Bartlein) *Price drop*. It was essentially the Huntington cartridge, but with a 26-degree shoulder for easier case manufacturing. To set up a viable 6mm ARC vs. these other calibers, I set 100-meter zeros, then confirmed at 1100 meters providing a proven hold at range. This is fortuitous, as it is a delight to reload and seems to like just about all the bullets Ive tried in it. Dr. Maybe, if you are shooting farther out. Some tactics never die, they just get regenerated. 223 Rem., and most other cartridges that fit AR-15 length magazines and rifles. Im referring to the 6mm Creedmoor, which is simply the 6.5 Creedmoor case necked down with no other change. I had a 6mm Norma BR built on a Remington 700 and I could not get it to feed from the magazine. Always enjoy your videos. Given the need for a centered shot on a 6 roundish target from 100 to 300 meters, I would take it without hesitation. Hornady's new 6mm ARC was designed for a specific military requirement; the 108-gr. Just pouring powder in and checking it by eye. Advantage, magnum. 6.8 SPC The 6mm ARC has more match bullet options and is a better long-range performer. Poll: Whats your number one reason for reloading? Recoil is subjective and using the same bullet weight they were all close. Powder selection is easy: Just stick with CFE 223 and all will be right with the world. However, after completely missing five consecutive bucks with my 6mm, I decided that I needed to hunt with that Remington 6mm like I hunted with my 2-3/4 inch 12 gauge. For now, though, it is anything but a sea change amongst the broader Special Missions Units. Typical social media and industry speculation fired up with a fury. The 6 ARC proved at 2720 fps with a Density Altitude of 8800 feet. Heres a quick look at the best of this cohort. While it did well the clear winner was the 6CM, high BC and extra velocity are hard to overcome at this range. Copyright 2000-2023 24hourcampfire.com, Inc. All Rights Reserved. bullets. L. to R. are 243 Winchester, 6mm Remington, 240 Weatherby Magnum. Sign up with your email address to receive news and updates. Available in different sizes and red dot ready, it'll fit your needs, whatever they are. I previously tested them in other calibers. What about your 6.8 SPC? A memorized trajectory curve combined with a ballistic reticle or turret dialing could compensate. for a Remington 40XB Rifle in 6m/m Remington Bench Rest back in 1985 or so. of H2O, almost right inbetween a 6 mm PPC, around 32 gr. It also produced the best accuracy as seen here: This load is a good performer, but I wanted to see if I could get more velocity from the 108 grain ELD-M bullets, so I tried a different powder! The 6mm ARC is a 5.56-platform compatible cartridge, similar to the 6.5 Grendel. [5], The cartridge makes use of 6mm (.243 in) bullets, which are known for their high ballistic coefficients due to the high sectional density with less drag and better energy retention at extended ranges. Shooters needed cartridges that would fit these increasingly popular, super-short actions. H2O, and a 6mm BR, around 39.0 gr. This rifle originally started out as a 224 Valkyrie using their IRMT upper and NX15 lower. The latest, sleekest, high B.C. Absolutely, but not significantly better than the 224V with the 90 grain SMK. Availability of factory ammo may be a plus for the 6ARC. For a better experience, please enable JavaScript in your browser before proceeding. As their names imply the biggest difference between the 6mm Creedmoor and the 6.5 Creedmoor is the bullet class. It is formed by using a shortened .22-250 Remington case, and it has thinner walls for increased powder capacity and the Ackley improved shape. Whats the plus delta on each? Hornady is claiming its 6mm ARC will yield 2,750 fps with a 108-grain ELD-M bullet from a 24-inch barrel. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Did not hit as hard but it was no slouch, anything it hit would notice for sure. it looks like the 6mm ARC is 1.490 and the grendel case is 1.52, so not much of a shortening if really at all. It is chambered in many very good and some very inexpensive rifles, which have helped make it the hit that it is. Straight-wall rounds like Winchesters little 350 Legend may be the only centerfire rifle cartridges legal for deer hunting in some states, so of course theyre going to be popular. In the 1970s, Remington experimented with a .308-sized case that was about 1.5 inches long and had a small primer pocket (like the PPCs). Our real questions are (A) What is the 6 ARC, (B) What does it do, and (C) is it doing something better than what you already own and love? The .223 75-grain bullet, by contrast, drifts more than 15 inches at that range, and the ARC's advantage becomes more pronounced at longer ranges. Legend, 450 Bushmaster. Eight reasons to embrace the Hornady 6mm ARC and other low-velocity cartridges. VLD, Hornady 108-gr. Posts: 11,077. Maximum Cartridge Overall Length is 2.26. Team Hornaday is the master, bar none. Copyright Ron Spomer Outdoors document.write(new Date().getFullYear()) When it comes to the 6 ARC vs. everything else, it felt like carrying a 224V with the same length barrel. Ballistic Calculators & Field Results . Salmon River Solutions: Ulra-Light Brakes, Rails, and more, Area 419 Orange Vise Maintenance and Barrel Change Jaw Kit, Hands-On: Phodera Armory Hill Country 30 Caliber Suppressor, Rifle Reloading Basics Pt1: Safety and Brass Tumbling, NEW Dies from Area 419: M-Series Sizer (In-Depth), Perfect Primer Seating with Frankford Arsenal, RCBS Lightweight Partner Press Unboxing and Overview, TESTED: Double Alpha Academy Turbo Case Feeder, Unsolved: 44 Magnum Over-Pressure Mystery, RCBS Lock-Out Die Part II: Setup and Maintenance, RCBS Lock-Out Die Part I: Theory of Operation, Reloading Safety: Powder Check Systems Overview. With more case capacity, the 6mm BR can drive the heavier, higher BC bullets needed at long distance. 6mm ARC vs 6mm BR. A World Record Attempt and everyone is out at the range shooting and practicing. But the 6mm ARC drops 22.2 inches. Does the 6 mm arc not have 30 degrees shoulder angle?is wikipedia wrong? You can get a 6 to 6.5 pound rifle which can shoot high B.C. Read on! That wont change and logistically the 6 ARC is still at baby steps. Doesn't the 6mm ARC have a smidge more powder capacity over the 6mm BR? However, the 6mm BR is superior at 300m and beyond. Mag. But at the same time were seeing the 6.5 Creedmoor and 6.5 Grendel; the 6.8 Rem. Cleaned it all but twice missing one cold shot at this range. Should I consider another upper? My barrel is a 7 twist 20 and Im going to try the Hornady 108s and I may try some VARGET too as it is another of my favorites. Before there were scopes or red dots there were iron sights. That was the era of increasing muzzle velocity. Each rifle ships with one 10-round magazine. Posts: 38 Threads: 10 Joined: Aug 2020 #1. The 6 ARC was consistent, precise, and repeatable both on cold shots and groups but was about the middle of the pack with the rest. Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243s huge success. Hunters may see an advantage as the ELDX and other hunting bullets are tested. Both can produce sub-MOA groups, but 224 Valkyrie seems to spread out faster than 6mm ARC. Using already available magazines, bolts and the AR15 platform is a big plus. The difference between the 6 mm BR Rem and the 6 mm BR Norma are slight, but in a tight chamber . Top loads used H322, W748, and Reloder 7 powders with 65-, 68-, and 75-grain match bullets. Its a long-distance for any of these and conditions were anything but ideal. The newest 6mm cartridge is the 6mm ARC, which Hornady just introduced. was not, and the .243 Win. Ran great with solid and repeatable accuracy using the same bullets as the 6CM. Reduced recoil minimizes flinching and enables shooters to see their hits or misses so they can correct for subsequent shots. The content on this website (including videos, articles,ammunition reloading data, technical articles, gunsmithing and other information) is for demonstration purposes only. The short reality is somewhat different. A fun challenge. The ARC seems to be knocking on the heels of a BR. Company literature in 1955 described both bullets as Soft Point.. Tests varied from 100-1100 meters (110-1200 yards, for the metrically challenged). There aren't any markings on the barrel, but it was advertised as being a 6 BR REM and the reloads that came with it seemed to chamber fine when the barrel was still attached to the action. That said, I just got a 6BR for my new PRS rifle. Jeff, did you mean to type - 6.5BR? By comparison, the 6 mm ARC gets there in 2.04 seconds. I shot out to 700 yards next with .4 to .5 MOA accuracy and ended the day putting 3 out of 3 shots on the 900 yard gong in a .4 MOA group. 2730 FPS and way over-pressured though SDs were single digits, groups were all just over 1.25 MOA. Hornady found a solution with the 6mm ARC. Some examples include the 6mm-204 and the 6x45. just get a 6mm hagar. was introduced in Remingtons Model 722 short-action bolt gun, and while the Model 722 was a very accurate rifle, it was rather plain. Then the AR-15 platform exploded and the game changed some more. There is no reason that it shouldn't, it is basically a blown out 6mm PPC which is probably the gold standard for accurate cartridges. It suffered no vertical stringing. wasnt the only knife in the drawer, even if it was the sharpest one. 'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs'); 2023 Copyright 2023 Ultimate Reloader LLC. In my mind, if 6BR would readily fit in a small frame AR there would be no reason for 6ARC. It gave dependable accuracy and high velocities. Sectional densities are similar, and both should be good penetrators. No factory rifles or ammo was available, but for a while, Federal offered nickel-plated 6x47 cases. This rifle is optimal for 6mm ARC because of the 20 barrel length, and the 1:7.5 twist rate. It is accurate, produces good velocities, and the copper eraser stuff in this powder makes barrel cleaning a breeze. Hey Gavin and fellow Ultimate Reloader Fans: I had a chance to do more testing today as I finally received some Hornady factory 105 grain Black ammunition. As for the 6ARC, I would take a vital shot at 600 meters without hesitation given a solid platform. But because 6mm arc is currently $34.95 per box and 6mm CM is $31.50 there is not enough cost difference to worry about since I don't reload yet . The hardest thing about ladder testing for the 6 BR is deciding which load is the best because they are so good. Velocity is 2,827 fps, and out of my Browning A-bolt II, it groups into 1.10 inches. The 6mm Creedmoor and it's smaller siblings like the 6mm Dasher, BR . The problem is that Hornady, which developed the 6 mm ARC, made a slight alteration to the case length so that it would be compatible with very long 6 mm bullets that have a high BC. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. I was lucky enough to get my hands on one of the first CMMG Endeavor 300 6mm ARC AR-15 Rifles, and it has been awesome to shoot! The .244 Rem. Here I am shooting a Smith & Wesson M&P chambered 5.56x45mm. Rifle cartridges (l. to r.) .308 Win, 6mm ARC, 300 AAC, .223 Rem, Hornady 6mm ARC Cartridge - What You Need to Know, Public Introduction - 6.5 Creedmoor - 6mm-ARC-Public-Introduction-Rev-2020-06-18.pdf, Brand new rifle caliber: 6 mm ARC, Hornady's Advanced Rifle Cartridge! Unless youre carrying this into combat, Im not sure it matters. The Model 70 .243 Win. Taurus has redesigned this sporting pistol for performance. You are using an out of date browser. .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }, Ultimate Reloader LLC / Making with Metal Disclaimer:(by reading this article and/or watching video content you accept these terms), This section is from my 6mm ARC Announcement Post. What explains that? For example, the data in the Hornady 11th Edition Manual for an 18 in (457 mm)-barrelled AR-15 platform firearm was on average 200-300 ft/s (60-90 m/s) less than the data for the 24 in (610 mm)-barrelled CZ 527 bolt action rifle. You never know for sure, but its not a failure out of the box like so many others. Not a single stoppage amongst them too include a couple 17 round full auto mag dumps. Brought out by Hornady just a few months ago, this moderate-sized round is based on the 6.5 Grendel and shares similar rim and body dimensions. Standard practice is to start tweaking burn rates, bullet weight and weighting factor to make calculated muzzle velocity match actual. Retested today with 26.3 grs. They still do. I fall into the latter category. I had three high capacity magazines using white followers, two 17 rounders with green followers. Designed for superior long-range accuracy, the ENDEAVOR line features a 20-inch barrel so that you can squeeze out every drop of ballistic performance from this exciting new caliber. No knobs, just a hold using the reticle, find it, read the wind, hold, and press, adjust as needed and repeat. Designed to meet the needs of the worlds toughest critics, the 6mm ARC utilizes efficient, high-BC bullets to deliver unprecedented performance from the AR-15 platform. They built these rifles with great attention to detail. Has any one who has both ever measured the case capacity (H2O) My google foo has failed me. Short, fat cartridges leave room for long necks that hold long, high B.C. The 6.5 Grendel was made by modifying the 220 Russian parent case. H4895. However, I would not want to carry it far. Because it fires heavier projectilesup to 110 grainsthan the 5.56 at velocities up to 2,800 fps, the 6mm ARC has the ballistics needed to vastly improve the performance of AR-15 rifles without a lot of added weight. This isn't your grandpa's muzzleloading system. Im interested in a direct comparison to the 224 Valkyrie and the 6 mm ARC. Cold shots fell inside half an inch of the center a couple cut the red center dot. One other fine 6mm round is the .240 Weatherby Magnum. As the heaviest rifle tested recoil with the LMT Mars-H in 6.5CM was about the same as the Zev in .223 Wylde, the next best performer for groups. case necked up, made especially for ARs. The .240 Wby. projectiles make up for their lower MV with less wind deflection, the toughest variable to battle at long range. August 14, 2022. There are probably better choices in a bolt gun, The 6 BR Rem has been around for a while but not fifty years, yet. Some of the super short cartridges created to fit the increasingly popular AR-15 platform rifles with 2.26" magazine length. The 6mm ARC's more efficient projectiles with their high BCs provides superior exterior ballistics with noticeably less wind drift, higher retained velocity and greater retained energy. Mag. I must note here how hard it hit. I think the point of the arc is that it works in an ar 15. Just looking for a ball park difference. Its all about the lack of correlation between mapping out rounds on a computer and sending them downrange at targets measured in yards. In an effort to salvage the .244 Rem., in 1963, Remington changed the name of the round to 6mm Remington and the barrel twist rate to 1:9 inches. In the 6mm ARC vs. the rest of the calibers vying for your attention, we have to ask if it the next 6.5 Creedmoor. Some smaller capacity, low velocity rounds are tailored for sub-sonic, low-report firing for clandestine military engagements. Aug 11, 2020 . I had only some pre-primed new Hornady 6mm ARC brass to start with and the SAAMI Specs for 6mm ARC. Slightly bigger still is the 6CM, which invokes much cooler H1000 powder (to best all these in barrel life). If you want to shoot at distance with your AR-15, this is the cartridge. .563) from wobbling, the 6mm ARC will need at least a 1:7 twist. They are an LMT Mars-H with a 20 6.5 CM barrel, Leupold Optics Mark 5 HD 5-25 T3 reticle using 95 grain Hornady VMAX. Do you load for a Uintah Precision bolt upper? Short, relatively fat cartridges concentrate powder near the ignition flame for an even, consistent burn with a tendency to improve muzzle velocity consistency. 6.5 Grendel vs. 6mm ARC Ballistics. Mag. 1,226. The bullet drop for the 6.5 Grendel is slightly greater because it's a larger bullet. This means you have the option to read your magazine on most popular phones and tablets. This colored our perception of lower velocity rounds. When youre shooting dozens and dozens of rounds in a single competition, barrel life matters. It would also be used as a deer rifle for new shooters (small deer, sitka blacktails). bullets. Ballistically, thanks mostly to heavy-for-caliber, high B.C. Read it here. bullets for the Hornady 6mm ARC. Due to the lower MAP, the performance of 6mm ARC ammunition loaded to gas-gun pressures will, on average, be less than firearms loaded to bolt action pressures when using the same barrel length. I had a Remington Model 700 BDL Varmint rifle rebarreled with a heavy stainless-steel barrel chambered for the round, and it lived up to its reputation. That will undoubtedly change, but not overnight. The 224V and 6 ARC were identical to shoot and will probably stay my dedicated 1000 yard rifle (s) both ringing steel pretty easily. Joseph Von Benedikt visits with Aaron Oelger from Hodgdon about the unprecedented demand on the shooting supply industry. HunterMann Well-Known Member LRH Team Member Joined Jan 18, 2021 In a 10-mph crosswind the 6mm ARC 108-grain bullet drifts 10.9 inches at 400 yards. The Barnes 80-grain Tipped Triple-Shock BoatTail sizzles with a velocity of 3,226 fps with a safe loading of VihtaVuori N550 powder, and the Speer 90-grain Hot-Cor can easily achieve 3,115 fps with VihtaVuori N160. The 6mm ARC does what much larger cartridges can and everything that smaller cartridges can't. It delivers substantially better ballistics than the 223 and offers a much lighter gun/ammo system with 30% less weight than the AR-10/308 Win system. Mag., the 6mm-204 essentially recreates the 6x47. 6mm ARC vs 6mm BR. The only difference is the Proof Research 18 1-7.5 twist barrel, 6.5 Grendel bolt, and E-Lander magazines. Five more for effect as fast as I could get back on target ended the drill. Give a Gift
I don't shoot past 300 and dead is dead. The Remington 600 action that it came off was set up as a single shot rifle, no magazine assembly, and the Fajen stock was inletted just deep enough for a 1/2" thick aluminum platform to lay the cartridge on. I started out a skeptic, not terribly excited about the 6mm ARC. Curious? Obviously, they are not nearly as popular as the 6mm hunting cartridges. Pretty cool having a light-weight AR-15 that can accurately shoot out to at least 900 yards. The IRMT upper locks the barrel in place with unparalleled rigidity. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. 1,461. Or it fits the extra-short AR-15 platform rifles beloved and preferred by many shooters. I also shot mine with an Ultra 9 direct-thread suppressor. Not liking Factory ammo so much as the longer OAL is a fair bit more difficult to load the magazine. Posted: 11/11/2012 6:04:07 PM EST [#2] Velocity with a 105gr bullet from both is 2750 fps. Each session started with a cold shot at 100 meters confirming zero while showing repeatability out of the bag. If this development strikes you as the opposite of progress, you might have spent the bulk of your life in the 20th century. Its 26-inch barrel made the rifle a bit heavy for toting over hill and dale, plus the 1:12-inch twist limited bullet weights to 90 grains or lighter. And thats the subject of this article: chronicling my first loads (I did not have factory ammunition to test) and validating claims related to 6mm ARC performance. !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)? Clearly better to galivant around the countryside with then an AR10. By accepting these terms, you agree that you alone are solely responsible for your own safety and property as it pertains to activities, procedures, techniques, or practices described in whole or part on this website. GD. Dropped on my M16 lower doubles and triples stayed on a full-sized silhouette out to 25 yards, stretched doubles to 50 yards. Some have long and storied histories, while others are just now making their own legends. I also measured five fired but not resized factory 6mm ARC cases. I have never had a easier caliber to load for. I chose to start with Varget because of what I read about 6mm PPC, and I have a lot on hand! Here was my strategy to extrapolate my results to the likely scenario of the 24 test barrel: Heres the work-up: (pressure listed is MAX projected, not average). But on paper it looks promising. I am a much better bolt gun shooter than AR shooter. remains a solid performer with todays high-tech bullets, new powders, and fast-twist rifle barrels. Excessive recoil, debilitating blast, and marked overpressure remain its claim to fame, thereby making it unsuitable for comparison for most of us. Variations on a theme. All Rights Reserved, Borden's 7mm Rem. It started as a popular wildcat before its approval by SAAMI.