For hunting purposes I expect 100 grain bullets & less will be preferred in this platform based on my experience. I also measured five fired but not resized factory 6mm ARC cases. Ok from the perspective of one 6mm ARC lover. Mag. The old 243 Winchester can beat that by about 300 fps. Poll: What Progressive Reloading Press Do You Use Most? The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). Outside a few very special special units, the military gets whats issued. After forming some cases I shot Berger 105 hybrid targets over 27.5 grs. Some have long and storied histories, while others are just now making their own legends. Ill be publishing a full overview story covering this rifle, but in the meantime, here are some specs from the CMMG Product Page: CMMGs ENDEAVOR line of rifles are now available in Hornadys new 6mm ARC (Advanced Rifle Cartridge). Would love to get this thing shooting consistently under .5 with enough speed to reliably ring steel at 1000. Copyright Ron Spomer Outdoors document.write(new Date().getFullYear()) (roughly .530 to .540 B.C. It is based on the .308 Winchester case, necked down with no other change. WT?, Tactical Time Lord. 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. The newest 6mm cartridge is the 6mm ARC, which Hornady just introduced. That flattens trajectories somewhat and applies a bit more punch to the game. 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. Once lasers hit the fields, the game began to change. For now, though, it is anything but a sea change amongst the broader Special Missions Units. Unlike the WSSM, the Hornady 6mm ARC was engineered around a long, high B.C. 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. Cleaned it all but twice missing one cold shot at this range. 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. [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. WARNING: The load development techniques and load data shown in this video are experimental and are for DEMONSTRATION PURPOSES ONLY. Your email address will not be published. [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. Review: Hornady 6mm ARC. I'm a 6.5x47 lapua man myself. Ballistic coefficients are about equal, with a slight edge going to the 6mm 108 ELD . They built these rifles with great attention to detail. Thread Modes. Ever since the 6mm ARC came out I've been stuck on the idea of building one as a bolt gun trainer, specifically on a Tikka action. can exceed it by 500 fps and the 240 Weatherby by 600 fps. For those using 6.5 Grendel, its a 5-minute barrel change. Savage Model 110 Timberline 6.5 Creedmoor Rifle: Full Review, SIG Sauer P365 Pistol Now Offered in .380. Use load data at your own risk. Those held a water weight of 34.74 grains with a SD of .14 grains. with a collective yawn and flocked to the equally new and elegant Winchester Model 70 Featherweight in .243 Win. Accuracy was good, with one group I captured on camera (see video) measuring 0.750: I decided to see how fast a 95 grain bullet could be propelled by the 6mm ARC, so I turned to some 6mm Berger Classic Hunter bullets I had on hand, and Ramshot TAC powder. Just pouring powder in and checking it by eye. This is only a slight victory, however. 223 Rem., and most other cartridges that fit AR-15 length magazines and rifles. Thats only a minor impediment for serious riflemen. Lets break down a few things about this number: So if you have a 24 bolt-action 6mm ARC rifle, thats the velocity you should expect. My speed is significantly slower ( 50 FPS) than Gavins at 2552 FPS with an SD of 6. These did not shoot well at all for me at 100 yards with an average of 1.9 MOA and after two lackluster 5-shot groups, I discontinued testing with them. 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. The short reality is somewhat different. The 24 Nosler is a terrific performer, so dont let its small size fool you. The general shooting public loves them for control of vermin like feral hogs. 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. Todays fast-twist .223s and heavy bullets have made it effectively obsolete. 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. Using a LabRadar chronograph to measure velocities, we saw an average of . Thanks in large part to new, long-range shooting competitions, our acceptance of lower velocity accelerated even as muzzle velocities decelerated. 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. Reduced recoil minimizes flinching and enables shooters to see their hits or misses so they can correct for subsequent shots. You can boost the performance of the 6mm ARC in a bolt action quite easily. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Whats the plus delta on each? As such, SAAMI maximum average pressure is set at a relatively mild 52,000 psi. 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. In addition to the above comments there is some confusion regarding the 6 mm ARC's performance. As for the 6ARC, I would take a vital shot at 600 meters without hesitation given a solid platform. 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. Pretty cool having a light-weight AR-15 that can accurately shoot out to at least 900 yards. 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. Using 26 to 28 inch barrels in bolt guns, 6ARC may be easy for those that do not reload or have primers. 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. Cold shots fell inside half an inch of the center a couple cut the red center dot. Let us count the ways. wasn't as big a fan of his 4 oz trigger but all in all I want one someday don't know enough about the 6 arc to comment on it . How do lower velocity cartridges improve long-range shooting? Commercial 6mm ARC offerings will feature bullets selected to deliver ideal performance for hunting, match shooting and personal protection applications. It stays supersonic farther downrange than the 308 Win. (Ret.) Savage already offers a few more inexpensive options in 6mm ARC though defiantly not a mini action. It is accurate, produces good velocities, and the copper eraser stuff in this powder makes barrel cleaning a breeze. Low recoil is also noted. Full Member. All of the eyeball'ed loads produced sub-MOA groups. Available in different sizes and red dot ready, it'll fit your needs, whatever they are. wasnt the only knife in the drawer, even if it was the sharpest one. Alaska. A new 6mm round blossomed in 2017, and it has already taken a position in the Great category. The high B.C. Will it supplant mainstream calibers? 07-08-2022, 07:47 PM . How about the 26, 27, 28, and 30 Noslers? I have handloaded the .243 Win. Interestingly enough, my history with 6mm rounds began with the 6mm Remington. A memorized trajectory curve combined with a ballistic reticle or turret dialing could compensate. . 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! 22420 C.O.L. bullets for the Hornady 6mm ARC. According to some of the PRS crowd it lets you spot shots through your scope. With the 6PPC you have to turn necks and fire-form the cases from smaller 220 Russianbrass. That was the era of increasing muzzle velocity. It would also be used as a deer rifle for new shooters (small deer, sitka blacktails). Powered by UBB.threads PHP Forum Software 7.7.5. You get most of the good without most of the bad and that is a pretty good start. Availability of factory ammo may be a plus for the 6ARC. Advanced Marksmanship Unit. The current reincarnation of this round is the 6mm BR Norma, with essentially the same case dimensions. I did not have time to work up a load for accuracy, so Ill defer that discussion for a future post. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. 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. 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. Their 106 grain TAP round looks interesting with a .580 G1 BC but not available right now, will have to come back later on that. You could get hits at 900 meters with all of them, 5 shot strings were easiest with the Creedmoors and they ruled at 1100 meters. 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. Whats more: Its already SAAMI approved! That said, I just got a 6BR for my new PRS rifle. A fun challenge. Geissele fixed gas block was retained with no change in brass ejection pattern or bolt speed. Clovered groups were the norm for both. 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. This 6 ARC was an excellent performer, not a precision rifle but thats not what its for. Just striving for accuracy. 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. Mag. The .223 does have advantages, though. After that, it was the 6.5 and 6CM show. Most Popular. I don't know the velocity, but I suspect something under 3k. Also 6X47 has also interested me. The Hornady manual states that this second set of data should not be used in gas-guns. 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.". Mag. When it comes to the 6 ARC vs. everything else, it felt like carrying a 224V with the same length barrel. Unless youre carrying this into combat, Im not sure it matters. The deer load had a 100-grain bullet, and the varmint load carried an 80-grain bullet. Any discussion of great 6mm cartridges must start (some would say end) with the .243 Winchester. The Mossberg 500 Pump Action Shotgun is one of the most popular home defense shotguns on the market. Posts. 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. [10] The 6mm ARC therefore can also be a suitable chambering for shorter "micro-action" bolt-action rifles. For me because I have a cz527 I can convert enough said. SPC; the 300 AAC Blackout, 350 Winchester Legend and 458 Bushmaster. 6.5 Grendel vs. 6mm ARC Ballistics. From a precision standpoint, 6mm ARC does tend to beat 224 Valkyrie. We're going backwards! Handloads are easy to prepare, and while my limited use of the .240 Wby. 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. Should I consider another upper? While it is the same length of 20, my twist is faster at 7 rather than Gavins 7.5. The Zev Technologies .223 is still the most fun you can have with an AR out to 600 meters. I to have a precision .224 V and would love to see a real world side be side comparison with the 6 ARC. It is based on the 6.5 Grendel case, and time will tell if it, too, becomes one of the great ones. The 6 ARC proved at 2720 fps with a Density Altitude of 8800 feet. Low velocity coupled with relatively light bullets reduces recoil. I hired a Mossberg in 243 Winchester to take this multi-tined TX Hill Country whitetail with a single shot. The Hornady 6mm ARC takes the 24-caliber into record territory the slowest muzzle velocity of any commercial cartridge propelling .243 bullets. I'm pretty sure that the dies were marked 6 BR REM. August 14, 2022. However, I must confess that Hornadys factory loads shoot so well that the reloader is hard-pressed to better them. Accordingly, the firm introduced two loads. They run the gamut from tiny benchrest numbers to those with larger cases that essentially duplicate many factory rounds. Joined: Jun 2002. Unlike the NGSW the 6 ARC is a standard cartridge fired from an AR-15. 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. No math test required. Arguments amongst experts (real and self-delusional) spewed forth with ferocity. The 6mm Creedmoorin the same fashion of its larger counterpartfits those bullets very well. is One Gun To Rule Them All, New 270 Cartridges Challenge 6.5s and 7mms. As their names imply the biggest difference between the 6mm Creedmoor and the 6.5 Creedmoor is the bullet class. Lets now realistically compare the 6mm ARC vs. five of its perceived competitors. 6mm BR vs 6mm BRA vs 6mm Dasher. Hi Gavin, Dr. In very simple terms, the 6mm ARC's exterior ballistics exceed . The 6mm GT, left, seen next to another precision cartridge, the 6mm ARC.