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So adopting the cartridge should be, for many shooters, convenient and affordable. 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. If this development strikes you as the opposite of progress, you might have spent the bulk of your life in the 20th century. Not a single stoppage amongst them too include a couple 17 round full auto mag dumps. bullets in .243" help make the light-kicking, short Hornady 6mm ARC ballistically superior to the 308 Win., 6.8 SPC. I never cleaned it with anything. I had a 20 AR-15 to test with, so I had to do some math :). Joseph Von Benedikt is with Jorge Spat to learn all about it. Will it be my go-to bang away rifle, not likely. But on paper it looks promising. What does all this mean? We're going backwards! 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 . Each rifle ships with one 10-round magazine. But I wanted to get some real-world results with my new CMMG Endeavor 300 6mm ARC AR-15 published as soon as I could, and therefore embarked on an exciting journey. Wait a minute. Maybe, if you are shooting farther out. As a follow-up exercise, I plan to use QuickDesign software to create a more accurate model for the 6mm ARC. Copyright Ron Spomer Outdoors document.write(new Date().getFullYear()) Sneak Peek of Bryan Litz's New Book: Volume III of Modern Advancements in Long Range Shooting. That will undoubtedly change, but not overnight. Her 6mm Creedmoor rifle is light and handy and shoots like a house afire, and recoil and muzzle blast are modest. Low recoil is also noted. 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. Custom Mossberg 500 at the Range and Live Turkey!. Subscriber Services. Ran great with solid and repeatable accuracy using the same bullets as the 6CM. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. This means you have the option to read your magazine on most popular phones and tablets. As Jackie says there's a big difference in the cases. 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. For now, though, it is anything but a sea change amongst the broader Special Missions Units. Another cartridge that deserves mention is the relatively new 24 Nosler. If you are looking for 6mm ARC ammunition, components, or parts/gear, check out the following: Dont miss out on Ultimate Reloader updates, make sure youre subscribed! Lets now realistically compare the 6mm ARC vs. five of its perceived competitors. 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. The second set of data is loaded to a MAP of 62,000 psi, which is stated to be for use with bolt action guns such as the CZ 527. The 224V and 6 ARC were identical to shoot and will probably stay my dedicated 1000 yard rifle (s) both ringing steel pretty easily. I followed up with three at 300 meters and a 600 Meter shot on a 22 x 16 silhouette steel. A new 100-grain factory deer load completed the rounds metamorphosis. While this excellent cartridge was almost doomed at birth, it has hung on, to the chagrin of deer, prairie goats, coyotes, and rock chucks everywhere. Unless youre carrying this into combat, Im not sure it matters. Dr. VLD, Hornady 108-gr. The first set of data is loaded to the SAAMI maximum average pressure (MAP) of 52,000 psi, which is stated to be suitable for gas-operated firearms such as the AR-15 platform and its derivatives. I also confirmed velocity for existing conditions. You can get the 6XC brass in Norma which is very good. 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. I wasn't going to take a shot at more than 50 or 60 yards and would take my time before I squeezed the trigger. 6.5 Grendel The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. Overall, the 6mm ARC delivers optimum all-range performance and barrel life. Thread Modes. I also confirmed velocity for existing conditions. and puts more impact splash on steel plates than any .224 rounds. I must note here how hard it hit. Not liking Factory ammo so much as the longer OAL is a fair bit more difficult to load the magazine. It would also be used as a deer rifle for new shooters (small deer, sitka blacktails). Geissele fixed gas block was retained with no change in brass ejection pattern or bolt speed. You'll need a new barrel, bolt, and mags. by David Bahde | Dr. Barrel-length is an issue. From an LE perspective, changing calibers is like pulling teeth on a ticked off Grizzley, very low rate of success and its hard to beat a .223 for patrol. Minuteman. You get most of the good without most of the bad and that is a pretty good start. Before there were scopes or red dots there were iron sights. continues to ride the crest of the 6mm-caliber wave, the tried-and-true 6mm Rem. Or it fits the extra-short AR-15 platform rifles beloved and preferred by many shooters. 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. Even with the cost of the Proof Research barrel it doable. While it is the same length of 20, my twist is faster at 7 rather than Gavins 7.5. Im interested in a direct comparison to the 224 Valkyrie and the 6 mm ARC. remains a runaway hit to this day. The current reincarnation of this round is the 6mm BR Norma, with essentially the same case dimensions. was not, and the .243 Win. Mag. HunterMann Well-Known Member LRH Team Member Joined Jan 18, 2021 NOTE: This 6mm ARC reloading data is intended for use in bolt action rifles safe for pressures up to 62,000 psi. 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. There is a lot of hoped for or imagined history related to the 22 BR and 6 BR cartridges. Posts: 11,077. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. Will it become my 1000 yards rifle, maybe, it is working against the 224V and the jury is still out and will be until I get my hands on their TAP round, Ill keep you posted. It uses the ever-effective Hornady 100-grain RN InterLock with H4350 powder. 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. You can get a 6 to 6.5 pound rifle which can shoot high B.C. The 6mm ARC was designed to match specific DOD requirements while fitting in the AR15 platform. only ever shot someone else's 6br but I have to say I liked it a lot . ARC stands for "Advanced Rifle Cartridge." The caliber is 6mm or .243. Low velocity coupled with relatively light bullets reduces recoil. You will not find better quality and consistency when it comes to Lapua. The old 243 Winchester can beat that by about 300 fps. Full Member. Location. My sources tell me the 6 ARC was a very small order for a specialized unit requested by an obscure R&D group that works under the DoD (Department of Defense) umbrella. 22420 C.O.L. Cleaned it all but twice missing one cold shot at this range. The 6.5 Grendel was made by modifying the 220 Russian parent case. Shooters greeted the .244 Rem. This increased size means the 243 has a case capacity of 53-54.8 gr H2O. You may know one or two more. 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. You can boost the performance of the 6mm ARC in a bolt action quite easily. The 6mm ARC produces a larger splash signature that allows shooters to self-spot impacts and make rapid adjustments. 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. Im referring to the 6mm Creedmoor, which is simply the 6.5 Creedmoor case necked down with no other change. 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. was necked up to 6mm and called the 6x47. Retested today with 26.3 grs. Yes it is designed to run in AR15-platform rifles. Follow up to the above. I cant speak for the ARC, but for the 6BR. [5] Follow @UReloader 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. How do lower velocity cartridges improve long-range shooting? The deer load had a 100-grain bullet, and the varmint load carried an 80-grain bullet. Sort by. 75 GRAIN BULLETS SECTIONAL DENSITY: 0.181 DIAMETER: 0.243" 75 gr. Twist rate was one turn in 10 inches, which handled the 100-grain deer bullets nicely. It doesn't need a .308 sized action to work. Read it here. 6.8 SPC The 6mm ARC has more match bullet options and is a better long-range performer. The .240 Wby. of Israeli Defense Forces, joins David Fortier for an exclusive interview for Shotgun News. Not a contest. 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.