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. In a 10-mph crosswind the 6mm ARC 108-grain bullet drifts 10.9 inches at 400 yards. Todays fast-twist .223s and heavy bullets have made it effectively obsolete. Most Popular. You may know one or two more. With the super bullets and modern powders of today, I cant imagine a better deer and antelope round. Your email address will not be published. Posts: 11,077. Distance is its forte and with its 2020 introduction and ability to flatten the trajectory curve, the 6mm ARC might ought to have been called the "Corona cartridge.". Both can produce sub-MOA groups, but 224 Valkyrie seems to spread out faster than 6mm ARC. At the time of the 22 PPC and 6mm PPC being developed by Ferris Pindell and Dr. Louis Palmisano (thus the PP), the bench rest winners were often the 222 Remington and the 6x47 Remington (the latter being a necked-up 222 Remington Magnum). Played at other stuff with the 6 ARC but that was the bulk of the testing. Poll: Where are you finding reloading primers and powder? Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243s huge success. In simple terms, its essentially a 6mm Grendel with the Creedmoor treatment, alterations to the shoulder and casing for better feeding, more consistency, and ease of mass production. Whats the plus delta on each? Ultimate Reloader, LLC and Making With Metal can not be held liable for property or personal damage due to viewers/readers of this website performing activities, procedures, techniques, or practices described in whole or part on this website. Savage Model 110 Timberline 6.5 Creedmoor Rifle: Full Review, SIG Sauer P365 Pistol Now Offered in .380. You are here: Home > AR Parts > AR-15 Parts > AR-15 Upper Parts > AR-15 Barrels > 6MM ARC AR-15 Barrels 6MM ARC AR-15 Barrels Showing 1 - 16 of 16 items Sort By: Go Page of 1 Its why the 308 is absent from this test. 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. Save my name, email, and website in this browser for the next time I comment. It recoils about 50% less than any long-range 308 Win. was necked up to 6mm and called the 6x47. My guess is that Hornady is banking on a broader market with hunters and enthusiasts, once more ammunition is available. Hornady is claiming its 6mm ARC will yield 2,750 fps with a 108-grain ELD-M bullet from a 24-inch barrel. SPC; the 300 AAC Blackout, 350 Winchester Legend and 458 Bushmaster. The 6.5 Grendel was made by modifying the 220 Russian parent case. 1100m: This is more academic than real, but they claim 6mm ARC performs at this range (compared to the .223 and 308). 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. Whats more: Its already SAAMI approved! All of the design criteria that went into the 6.5 Creedmoor that make it a top performer were also used in the development of the 6mm Creedmoor. Each rifle ships with one 10-round magazine. Truth be told, the magnum race is still underway. (The company envisioned it as primarily a deer-hunting round, with occasional use on varmints.) We're going backwards! Party-poopers will gleefully point out that the 6.5 Grendel was based on the 6mm PPC case necked up, and here it is necked back down to 6mm. Legend, 450 Bushmaster. Some have long and storied histories, while others are just now making their own legends. bullets of the 6mm Creedmoor. Remington surmised that the .244 would be used mostly as a varmint cartridge, with only an occasional application on deer-sized game, so the initial factory ammo was loaded with a 75-grain bullet. I tested a bolt-action handgun in 24 Nosler last year and was so impressed with the round that I had a Remington Model 700 originally in .223 Rem. I got hold of the barrel and some ammunition, the rest was already around and was mounted in a proven build, my Seekins Precision NX15. I wont even mention primers as that is just generic across the board with any caliber at this point. What does the 6 ARC do that the 6 BR REM hasn't been doing for over 50 years? H4895 with 5-shot groups from the high .5s to 1.0 MOA. Again using QuickLoad, I developed the following load: Here I saw velocities averaging 2,631 FPS. Soft-report, low-recoil cartridges prove ideal for starting new shooters, many of whom never see the need for escalation. Commercial 6mm ARC offerings will feature bullets selected to deliver ideal performance for hunting, match shooting and personal protection applications. Wait a minute. While the .243 Win. Cleaned it all but twice missing one cold shot at this range. The Zev Technologies .223 is still the most fun you can have with an AR out to 600 meters. Using QuickLoad, I worked up the following load: For this load, I shot a group of 5 shots on the chronograph, and observed the following: This load produced very mild indications of pressure on the case rim, and functioned in the rifle well. Will it supplant mainstream calibers? Maybe in a rural area where ranges stretch out, but movement here will be a rarity. Precision Rifle Podcasts - 4 Podcasts Hosted by Top 10 Shooters. I'm thinking most, if not all of these are bolt actions, but there are plenty of AR rifles ready to chew up a few thousand 6mm ARC rounds for you. Dropped on my M16 lower doubles and triples stayed on a full-sized silhouette out to 25 yards, stretched doubles to 50 yards. and 6mm Rem., but it pushes them a little faster. I started out a skeptic, not terribly excited about the 6mm ARC. I cant speak for the ARC, but for the 6BR. The rim diameter of the 6mm ARC is 0.441 inches, while the 243 is slightly larger at 0.471 inches. 6.8 SPC The 6mm ARC has more match bullet options and is a better long-range performer. (Maybe in 6mm ARC? Twist rate is 1:7.5 to stabilize the long 105- to 108-grain high B.C. It depends on numerous factors, including ammunition used, barrel used, and the shooter's skill, but in general, 6mm ARC is a more precise cartridge. Looking at putting together on of lower powder capacity 6mms in an effort to possibly extend barrel life a touch and have a nice smooth/easy shooting gun. It's no surprise Hornady chose a 6mm bullet, either. But the 6mm ARC drops 22.2 inches. 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. Using already available magazines, bolts and the AR15 platform is a big plus. Some tactics never die, they just get regenerated. The .240 Wby. Full Member. The 6x45 is the .223 Rem. It is versatile, in that it is suitable in both ARs and mini-bolt guns for hunting, personal protection, and target shooting. Sign up with your email address to receive news and updates. (In the 1960s, Speer made a 105-grain RN just for the .244 Rem.) 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. That flattens trajectories somewhat and applies a bit more punch to the game. Another interesting development is the 6mm Dasher that was developed by Al Ashton and benchrest gunsmith Dan Dowling. 223 Rem., and most other cartridges that fit AR-15 length magazines and rifles. Were going backwards! Let us count the ways. Has any one who has both ever measured the case capacity (H2O) My google foo has failed me. Notify me via e-mail if anyone answers my comment. L. to R. are 223 Rem., 6.5 Grendel, 6.8 Rem. Mag. The release of the new Hornady 6mm ARC (Advanced Rifle Cartridge) supports the perception that gun and ammo makers are engaged in a race to the bottom. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. 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. 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. Savage already offers a few more inexpensive options in 6mm ARC though defiantly not a mini action. There you have it. 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. It was the wildcatters who brought it back to life by fiddling with a couple of popular designs. Recoil is subjective and using the same bullet weight they were all close. While it is the same length of 20, my twist is faster at 7 rather than Gavins 7.5. With the release in 2020, Hornady also launched three factory loads with 103,105 and 108gr (6.7,6.8 and 7.0g) bullet weights and advertised G1 ballistic coefficients of .512, .530 and .536 respectively.[6]. Shots were aimed from a bi-pod, the rifle on the bench with me standing behind it. We show you how. Or anything? Travis224 Sergeant. Just looking for a ball park difference. I had three high capacity magazines using white followers, two 17 rounders with green followers. Always enjoy your videos. At 400 yards, it has an average bullet drop of 22.2 inches. ELD (l.) makes for an excellent long-range target round, while the 103-gr. It is NOT for use in AR-15 style (gas gun) rifles. ARC stands for "Advanced Rifle Cartridge." The caliber is 6mm or .243. 6 ARC Testing 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. After forming some cases I shot Berger 105 hybrid targets over 27.5 grs. The 6 ARC proved at 2720 fps with a Density Altitude of 8800 feet. The .222 Remington, introduced in 1950, was top dog in benchrest circles until the advent of the PPCs, after which, the 6mm PPC was used by virtually all serious benchrest competitors. Making those tweaks often feels like creating a powder that doesnt really exist. The current reincarnation of this round is the 6mm BR Norma, with essentially the same case dimensions. The only difference is the Proof Research 18 1-7.5 twist barrel, 6.5 Grendel bolt, and E-Lander magazines. Your email address will not be published. for decades and have experienced no odd problems with it. 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. 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. I had a 6mm Norma BR built on a Remington 700 and I could not get it to feed from the magazine. Like the grendel though you probably don't want to run high pressures on an ar bolt though. I have never had a easier caliber to load for. In very simple terms, the 6mm ARC's exterior ballistics exceed . Powered by UBB.threads PHP Forum Software 7.7.5. Federal has created a safer, easier and more reliable way to shoot a muzzleloader. Company literature in 1955 described both bullets as Soft Point.. Blue collar reloading had 25 boxes of brass right now. Variations on a theme. Mag. Once we could pinpoint exact distance to target, maximum velocity didnt matter as much. Share. Not a single stoppage amongst them too include a couple 17 round full auto mag dumps. 100-300m: Consistent 100 meter groups in the .60 -.75 inch range, 2.5-3.0 inches at 300 meters were the norm. Tested, selected and fielded by a specialized group within the U.S. DoD for its multipurpose combat rifle program, the versatile 6mm ARC does much of what larger cartridges can and everything that smaller cartridges cant. As their names imply the biggest difference between the 6mm Creedmoor and the 6.5 Creedmoor is the bullet class. Hunters may see an advantage as the ELDX and other hunting bullets are tested. Theres more coming related to 6mm ARC! In the 1970s, I had a Remington Model 700 BDL so chambered, and I took my first Texas whitetail with it. When using shorter barrels, which are common on gas-guns, the difference will be even more pronounced. The 6mm Advanced Rifle Cartridge (638mm), or 6mm ARC for short, is a 6 mm (.243) caliber intermediate rifle cartridge introduced by Hornady in 2020, as a low-recoil, high-accuracy long-range cartridge, designed for use in the AR-15 platform at request of a specialized group within the U.S. DoD for its multipurpose combat rifle program. The latest, sleekest, high B.C. It uses the ever-effective Hornady 100-grain RN InterLock with H4350 powder. Take a look at any good ballistics program Hornady and Federal both have an easy-to-use program on their websitesand you'll see the advantage of the better B.C. One other fine 6mm round is the .240 Weatherby Magnum. Alaska. [7] What the 6mm ARC does offer though is almost comparable velocities and ballistic performance, but out of a compact cartridge that has lessened perceived recoil and fits into the standard AR-15 length actions. Nearly two dozen rifle makers are already chambering for the round, including Browning, Proof, Christensen, Barrett, Mossberg, and Howa. While almost any combination of components seems to shoot well, my favorite powders are Hybrid 100V, Reloder 17, and Power Pro 4000MR. Fast is better but slow means mo? Ballistic Calculators & Field Results . Those who are going to like or prefer the 6mm ARC will likely appreciate the 6mm ARC for its utility in either the AR 15 platform & or the mini action bolt action rifles. Ok from the perspective of one 6mm ARC lover. It stays supersonic farther downrange than the 308 Win. You won't have to fiddle with necking/reforming in 6XC. Factory ammunition at normal prices (if that exists anymore) suitable for defense, duty, target, and hunting is more available than similar calibers after decades of use. (roughly .530 to .540 B.C. The 6mm Advanced Rifle Cartridge (638mm), or 6mm ARC for short, is a 6 mm (.243) caliber intermediate rifle cartridge introduced by Hornady in 2020, as a low- recoil, high- accuracy long-range cartridge, designed for use in the AR-15 platform at request of a specialized group within the U.S. DoD for its multipurpose combat rifle program. LMT MWS, 20 224V, Sig Sauer Tango 6, 3-18 MRAD Dev-L using Federal GMM 90 grain SMK and an 18 SS Match 6.8 SPC with 110 Grain VMAX. It is a 6 BR REM barrel that came off a rifle that I bought for the Remington 600 donor action. This is exactly what we would expect. Availability of factory ammo may be a plus for the 6ARC. Some examples include the 6mm-204 and the 6x45. After entering my measured capacities, measured muzzle velocity with 27 grains of VARGET under the 108 ELD-M of 2554 is now within 2 FPS of Quickloads estimated 2552 FPS. Some tactics never die, they just get regenerated. The benchrest crowd has not been overlooked in the 6mm derby, and one cartridge literally rewrote the record book. Would love to get this thing shooting consistently under .5 with enough speed to reliably ring steel at 1000. Reply. [9] The 6mm ARC utilizes the same bolt head size as the 6.5mm Grendel, and 6.5mm Grendel-compatible AR-pattern box magazines have also been used successfully with the 6mm ARC. In addition to the above comments there is some confusion regarding the 6 mm ARC's performance. Even with the cost of the Proof Research barrel it doable. 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! No math test required. Tests varied from 100-1100 meters (110-1200 yards, for the metrically challenged). Joseph Von Benedikt is with Jorge Spat to learn all about it. Hornady Precision Hunter 6mm ARC 103 Grain Jacketed Soft Point Centerfire Rifle Ammunition, 20, SBT (Save 10%) $2.15/Round. is One Gun To Rule Them All, New 270 Cartridges Challenge 6.5s and 7mms. Required fields are marked *. This means you have the option to read your magazine on most popular phones and tablets. 6BR is the easy buttonstandard bolt face, top-quality brass, 30.0gr Varget under any 105-108gr match bullet to start. I did not try to shoot past 900 today because of limited ammo and Applied Balistics indicates that at 2550 FPS MV these 108s are going transsonic just past 900 and I didnt want to waste the last few shots. However, the 6mm ARC will service the military and civilian shooters more often in AR-15-type rifles, meaning barrel lengths will likely be closer to 18 inches. [citation needed]. However, 25.3 inches of drop at 400yds is by no means terrible. Shooters greeted the .244 Rem. The ballistics look great. Benchrest (BR) shooters will go to almost any length to shave 0.001 inch off of their aggregate average, and there is a diverse assemblage of 6mm wildcat rounds for BR shooters. Twist rate was one turn in 10 inches, which handled the 100-grain deer bullets nicely. Dr. Once lasers hit the fields, the game began to change. F-Class A to Z with Erik Cortina + Special Guest! I have a precision set up AR in 224 Valkyrie. Supporter. Read on! [5] 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. Also 6X47 has also interested me. Five more for effect as fast as I could get back on target ended the drill. It is based on the .308 Winchester case, necked down with no other change. That doesnt mean others in that community or those in contact with them may not want 6mm ARC someday, or even give it a try sooner than later. 22420 C.O.L. V-MAX Item No. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. Thankfully most bantering moved back to more pressing issues like high demand (and low supply) of firearms or ammunition and that pesky election coming up in a few short months. All Shooting Times subscribers now have digital access to their magazine content. 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. Follow @UReloader 07-08-2022, 07:47 PM . Given this or your typical AR10, no contest, the 6 ARC is much easier to carry. H2O. 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. L. to R. are Berger 95-gr. 6mm ARC has the potential to be the most versatile cartridge of all time for a few reasons: (1) 6mm ARC can handle projectiles anywhere between 55 and 115 gr. See full disclaimer below. 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. Thats only a minor impediment for serious riflemen. No surprise there since it is about the same weight as the 6 ARC and both used Proof Research barrels. For hunting purposes I expect 100 grain bullets & less will be preferred in this platform based on my experience. Thread starter Travis224; Start date Aug 11, 2020; Forums. 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). Some of the super short cartridges created to fit the increasingly popular AR-15 platform rifles with 2.26" magazine length. The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). Those who are going to like or prefer the 6mm ARC will likely appreciate the 6mm ARC for its utility in either the AR 15 platform & or the mini action bolt action rifles. Joined: Jun 2002. Thank you for this timely video. It still turns the steel and is very consistent holding 9 mils at the top. In my mind, if 6BR would readily fit in a small frame AR there would be no reason for 6ARC. Lighter and tougher and more precise than ever, it's the perfect back country hunting rifle. Shooters needed cartridges that would fit these increasingly popular, super-short actions. The bullet drop for the 6.5 Grendel is slightly greater because it's a larger bullet. 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. Really liking the 6mm Arc in this CZ 527 platform. Winchesters strategy for the .243 was twofold and well thought out. Unlike the WSSM, the Hornady 6mm ARC was engineered around a long, high B.C. 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. A fun challenge. That will undoubtedly change, but not overnight. bullets straight and seated above the powder reservoir. Based on the .204 Ruger, which was created from the .222 Rem. I am a much better bolt gun shooter than AR shooter. All barrels will be . Jan 13, 2021. Years ago I authored an article titled Lies, Damn Lies, and Ballistics. Which it does pretty well within those limitations. The rifles Barrett supplied for the DoD are top-notch, but they are just a modified REC-7 DI. When youre shooting dozens and dozens of rounds in a single competition, barrel life matters. It suffered no vertical stringing. Posts. It's also legal for deer hunting in more States and arguably more effective. Unless youre carrying this into combat, Im not sure it matters. As you can see, velocities differ by 170 - 220 fps, with the lighter 6mm ARC moving faster from the compact case. It was essentially the Huntington cartridge, but with a 26-degree shoulder for easier case manufacturing. 6mm ARC vs 6.5 Grendel. How about the 26, 27, 28, and 30 Noslers? remains a solid performer with todays high-tech bullets, new powders, and fast-twist rifle barrels. I cant see it, but for those who like to try something different its is a really nice option. As a follow-up exercise, I plan to use QuickDesign software to create a more accurate model for the 6mm ARC. Between 600-1100 was a different story, everything but the 6.8 SPC did well out to 800 meters including the 6 ARC hitting with a bit more authority than the rest. can exceed it by 500 fps and the 240 Weatherby by 600 fps. | 0 comments. of Israeli Defense Forces, joins David Fortier for an exclusive interview for Shotgun News. After that, it was the 6.5 and 6CM show. Posted: 11/11/2012 6:04:07 PM EST [#2] Velocity with a 105gr bullet from both is 2750 fps. 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 6 ARC was an excellent performer, not a precision rifle but thats not what its for. | If you already have an AR chambered in 6.5 Grendel, the ONLY thing you need to change is the barrel. Recoil is primarily a product of bullet weight. The 6mm ARC is a brand new cartridge that Hornady designed to fit into a standard AR-15. Slightly bigger still is the 6CM, which invokes much cooler H1000 powder (to best all these in barrel life). The 6mm GT, left, seen next to another precision cartridge, the 6mm ARC. It will be interesting if they chamber this in micro-action bolt carbines like the Grendel has been. Oct 7, 2010 530 254 44 Council Bluffs, Iowa. Always used manufacturers published load data! As such, SAAMI maximum average pressure is set at a relatively mild 52,000 psi. Every rifle is a proven performer to 1100 meters and an AR using the same or similar suppressor, no brakes, flash hiders or conventional suppressors. Follow up to the above. It is larger than the 6x47L and matching the 6-Creedmore capacity. Curious? Ammo capacity is about the same, 20 rounds with the longer Grendel mags. .243 bullet for military (combat) applications in modern, autoloading rifles. bullets like Hornady's 108-grain ELD-Match, the Hornady 6mm ARC drops and drifts less than any 223 Rem. Maximum Cartridge Overall Length is 2.26. You can get a 6 to 6.5 pound rifle which can shoot high B.C. Because it's been around longer there are many, many more factory loads . There is a lot of hoped for or imagined history related to the 22 BR and 6 BR cartridges. Velocity can be a factor, but given the same weight, recoil should be similar so I kept the weights as close as possible. A quality shooter can certainly compensate for 3 inches of difference, so while it's a victory for the ARC, it's a narrow win. 6.5 Creedmoor vs. 6.5 PRC: Which is Better? The case capacity of a 6mm AR is about 36 gr. remains a runaway hit to this day. Already offering hunting, practice, and LE (TAP) rounds, the 6mm ARC starts with a firm leg up and should not be discounted without regard to why it was developed. Or it fits the extra-short AR-15 platform rifles beloved and preferred by many shooters. The 6mm CM at 300yds is 2514 and 1446 and 6mm ARC is 2288-1197. The laser rangefinder, in part. Honey Badger, XM2010, C22, R4, MSR, CSR, AAC, BARNES BULLETS (https://www.youtube.com/watch?v=ykTfyrMiXps). The powder loads for the test spanned 1.6 grains and I fired 24 shots and only two were more than 1 MOA out. 1,226. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. 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. It is based on the previous 22 Nosler and has two features to make it compatible with AR-type rifles: a slightly rebated rim that is the same diameter as the .223 Remington and an overall cartridge length set at 2.26 inches, the same as other AR rounds. Reduced recoil minimizes flinching and enables shooters to see their hits or misses so they can correct for subsequent shots.
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