6mm arc vs 6mm br 6mm arc vs 6mm br

The first groups were the 6.5 Grendel cases that I modified for the 6mm ARC. Another cartridge that deserves mention is the relatively new 24 Nosler. Theres more coming related to 6mm ARC! The factory 105s shot at 2662 FPS with an SD of 11 as measured by a Labrador. Using already available magazines, bolts and the AR15 platform is a big plus. Hornady Precision Hunter 6mm ARC 103 Grain Jacketed Soft Point Centerfire Rifle Ammunition, 20, SBT (Save 10%) $2.15/Round. 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. The 6mm ARC is a brand new cartridge that Hornady designed to fit into a standard AR-15. Those held a water weight of 34.74 grains with a SD of .14 grains. 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. I also confirmed velocity for existing conditions. Again using QuickLoad, I developed the following load: Here I saw velocities averaging 2,631 FPS. Given the need for a centered shot on a 6 roundish target from 100 to 300 meters, I would take it without hesitation. It is chambered in many very good and some very inexpensive rifles, which have helped make it the hit that it is. The 6mm GT, left, seen next to another precision cartridge, the 6mm ARC. In 100-200yd benchrest competition, the 6PPC is still the "winningest" cartridge around. Reply. The general shooting public loves them for control of vermin like feral hogs. Twist rate is 1:7.5 to stabilize the long 105- to 108-grain high B.C. 6mm ARC vs 6mm BR. 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. 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! 6MM ARC AR-15 Barrels for Sale at Joe Bob Outfitters! Quickload can be frustrating when there is more than 10 FPS difference between calculated and measured MV. Im referring to the 6mm Creedmoor, which is simply the 6.5 Creedmoor case necked down with no other change. bullets of the 6mm Creedmoor. Accuracy was up to par, and shooters took to the rifle-cartridge combo like a duck, well, you know. I had a 20 AR-15 to test with, so I had to do some math :). Low velocity from a short cartridge means it fits in a shorter, potentially stiffer action which can contribute to increased accuracy. Aug 11, 2020 . Its accuracy is simply phenomenal, and it makes a superior varmint cartridge. The 6mm ARC is a 5.56-platform compatible cartridge, similar to the 6.5 Grendel. So, the 6mm ARC outperforms any magazine length 5.56x45mm NATO load simply through a combination of sheer horsepower and more efficient projectiles. Doesn't the 6mm ARC have a smidge more powder capacity over the 6mm BR? Some smaller capacity, low velocity rounds are tailored for sub-sonic, low-report firing for clandestine military engagements. Some tactics never die, they just get regenerated. There is nothing more competitve than a 6BR Norma when the wind is consistent or low. 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. From a precision standpoint, 6mm ARC does tend to beat 224 Valkyrie. 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. In very simple terms, the 6mm ARC's exterior ballistics exceed . Once we could pinpoint exact distance to target, maximum velocity didnt matter as much. The faster a bullet leaves the barrel, the farther it flies before hitting the ground, the less it deflects in crosswinds, and the more energy it carries when impacting the target. projectiles make up for their lower MV with less wind deflection, the toughest variable to battle at long range. Do you load for a Uintah Precision bolt upper? Oct 7, 2010 530 254 44 Council Bluffs, Iowa. Advanced Marksmanship Unit. I'm pretty sure that the dies were marked 6 BR REM. The 6mm Creedmoorin the same fashion of its larger counterpartfits those bullets very well. You might be surprised to discover you've come out on top! Comparing 6mm ARC to 6mm CR is is apples and oranges again. 6BR is the easy buttonstandard bolt face, top-quality brass, 30.0gr Varget under any 105-108gr match bullet to start. Both can produce sub-MOA groups, but 224 Valkyrie seems to spread out faster than 6mm ARC. remains a runaway hit to this day. But I wanted to get some real-world results with my new, would produce approximately 2,754 FPS in a 24 bolt-action rifle, Dont miss out on Ultimate Reloader updates, make. H4895 with 5-shot groups from the high .5s to 1.0 MOA. 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. And its performance is effective with a variety of bullets. The cartridge was developed by Noslers Mike Lake, and it was approved by SAAMI in 2017. For this load, I shot a group of 3 shots on the chronograph, and observed the following: (better chrono data coming in future stories, I had limited components and time). Mag. Before there were scopes or red dots there were iron sights. Sign up with your email address to receive news and updates. I had a 6mm Norma BR built on a Remington 700 and I could not get it to feed from the magazine. He gave it a 32-degree shoulder and called it the .243 Rock Chucker.. Maybe, if you are shooting farther out. And just in case some hunter wanted to knock off a deer with his .244 rifle, the company also offered a 90-grain loading. 2023 Outdoor Sportsman Group. Pretty cool having a light-weight AR-15 that can accurately shoot out to at least 900 yards. However, 25.3 inches of drop at 400yds is by no means terrible. Consistency remained about the same with 2 or 3 out of five the norm. 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. 6.5 Grendel The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. As Jackie says there's a big difference in the cases. Your email address will not be published. Cartridge experimentation was in its heyday in the 1950s, and it was a rare cartridge case that didnt get shortened, blown out, or necked up or down. 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. But on paper it looks promising. Share. Low velocity coupled with relatively light bullets reduces recoil. Cleaned it all but twice missing one cold shot at this range. Savage already offers a few more inexpensive options in 6mm ARC though defiantly not a mini action. Here I am shooting a Smith & Wesson M&P chambered 5.56x45mm. 75 GRAIN BULLETS SECTIONAL DENSITY: 0.181 DIAMETER: 0.243" 75 gr. When youre shooting dozens and dozens of rounds in a single competition, barrel life matters. .458 Winchester Magnum History: The Complete Story, 6.8 Western Ammo Options: The Load of Long Yardage, A World Record Attempt: Practice Round and Media Day, Interview with Israeli Defense Forces, Part 1. VLD Match. Ultimate Reloader LLC is not responsible for errors in load data on this website. Poll: What Progressive Reloading Press Do You Use Most? Commercial 6mm ARC offerings will feature bullets selected to deliver ideal performance for hunting, match shooting and personal protection applications. 6mm ARC vs 6.5 Grendel. The Eagle Eye 6.5 Creedmoor shoots a 130gr hybrid projectile with a .295 G7 at 2,960fps from an average 26" barrel. Use load data at your own risk. It's also legal for deer hunting in more States and arguably more effective. : 0.330 VELOCITY (FPS - feet per second) POWDER 3000 3100 3150 3200 3250 To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. 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. The deer load had a 100-grain bullet, and the varmint load carried an 80-grain bullet. Fred Huntington, founder of RCBS, developed a then-new 6mm cartridge by necking down the .257 Roberts case. Cal December 9, 2018 Leave a comment. In the 1970s, the .222 Rem. Most problems outside a war zone are handled nicely with 20 rounds and a couple of spare magazines. Mag. You must log in or register to reply here. It is larger than the 6x47L and matching the 6-Creedmore capacity. Your email address will not be published. Were going backwards! Joseph Von Benedikt is with Jorge Spat to learn all about it. By comparison, the 6 mm ARC gets there in 2.04 seconds. Powered by UBB.threads PHP Forum Software 7.7.5. It's wearing a, Finally, we started seeing heavy, high B.C., very low drag bullets that improved trajectories by minimizing drag and conserving energy. You get most of the good without most of the bad and that is a pretty good start. 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. The old 243 Winchester can beat that by about 300 fps. After that, it was the 6.5 and 6CM show. A World Record Attempt and everyone is out at the range shooting and practicing. Available in different sizes and red dot ready, it'll fit your needs, whatever they are. remains a solid performer with todays high-tech bullets, new powders, and fast-twist rifle barrels. The 6mm ARC cartridge is a new SAAMI-spec cartridge based on the 6.5 Grendel case necked down for 6mm bullets, with the shoulder moved back 0.030. In between: Everything performed swimmingly between 100-400 meters as they should, once again the ZEV shines here with no recoil and consistent accuracy, almost boringly easy to get hits. 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 need for a new, uncommon bolt/ face/ assembly kills 6 arc in the real world for bolt guns. The 224V and 6 ARC were identical to shoot and will probably stay my dedicated 1000 yard rifle (s) both ringing steel pretty easily. Only a few metric calibers have been really popular in the United States6.5mm and 7mmso the Great 6mms are relatively few in number. 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. Yes it is designed to run in AR15-platform rifles. pathfinder76 #14942491 06/04/20. The 6mm Advanced Rifle Cartridge (6 ARC) by Hornady is a new cartridge that can fire a sleek 6mm (.243) caliber projectile around 2,700 fps with minimal recoil and the 6mm ARC is short enough to fit within the dimensions of a standard AR-15 magazine and it performs very well out of an AR-15 with an 18 inch barrel (what we tested). 6mm ARC: Fact or Fiction? The author marvels at the gun industry's ability to create ever more cartridges that keep the shooting sports fresh. 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). .243 bullet for military (combat) applications in modern, autoloading rifles. I think the point of the arc is that it works in an ar 15. Velocities were established from a 24-inch barrel. Just pouring powder in and checking it by eye. Whats the plus delta on each? Editors Note: Looking for a deeper dive on the 6.5 Grendel vs. 6mm ARC? While the .243 Win. It is a 6 BR REM barrel that came off a rifle that I bought for the Remington 600 donor action. In my mind, if 6BR would readily fit in a small frame AR there would be no reason for 6ARC. As you can see, velocities differ by 170 - 220 fps, with the lighter 6mm ARC moving faster from the compact case. Copyright Ron Spomer Outdoors document.write(new Date().getFullYear()) In many ways, the race to the bottom is paying off. 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. 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. No surprise there since it is about the same weight as the 6 ARC and both used Proof Research barrels. But do you know how to properly use them? L. to R. are 223 Rem., 6.5 Grendel, 6.8 Rem. The handguard bolts to the upper eliminating impact shifts when setting the bi-pod or locking into a barricade or obstacle. Learn the difference between revolvers and semi-auto pistols and what makes them different. The 6mm ARC uses commonly available 6.5 Grendel magazines/bolts. Dave Bahde Dr. WT? This morning, using the same scale and method as Gavin, I measured the case capacity using water weight in two sets of fired but not resized cases. The rim diameter of the 6mm ARC is 0.441 inches, while the 243 is slightly larger at 0.471 inches. The newest 6mm factory round is the recently announced 6mm ARC (Advanced Rifle Cartridge). The powder charge I used then is lost to history, but the bullet was a Speer 90-grain SP. The suppressor is an X2Devgroup, Orion X. Its short at 6, light at 16 ounces, and has no backpressure eliminating excess gas. Shooters greeted the .244 Rem. 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. Blue collar reloading had 25 boxes of brass right now. Accordingly, the firm introduced two loads. shoots the same cadre of 0.243-inch bullets as the .243 Win. Joseph Von Benedikt is with Rafe Nielsen of Browning to take a look at a new X-Bolt series rifle. But since there is no factory ammo, 24 Nosler shooters must handload. HunterMann Well-Known Member LRH Team Member Joined Jan 18, 2021 Twist rate was one turn in 10 inches, which handled the 100-grain deer bullets nicely. Photo Courtesy Berger Bullets. Facebook; Twitter; Pinterest; Related Articles. There are 6ARC bolt guns out there. 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. 600m: Out of ten cold shots at 600 meters 7 hit home, pretty impressive. JavaScript is disabled. (roughly .530 to .540 B.C. LMT shot softer, exhibited a tank-like build, and proved great to shoot. Or anything? Five more for effect as fast as I could get back on target ended the drill. Wildcatters have had a field day with the 6mms, and the list of their creations is long. The Hornady 6mm ARC takes the 24-caliber into record territory the slowest muzzle velocity of any commercial cartridge propelling .243 bullets. Hornady is an obvious first choice for selecting 6mm projectiles to load the 6mm ARC with. A new 100-grain factory deer load completed the rounds metamorphosis. Curious? It debuted in 1955 and has been immensely and justifiably popular ever since. Some tactics never die, they just get regenerated. Based on my best estimation, my H-4896 108 ELD-M load would produce approximately 2,754 FPS in a 24 bolt-action rifle. This is the Great short, fat 6mm PPC that was developed by Dr. Louis Palmisano and Ferris Pindell. If you want to shoot at distance with your AR-15, this is the cartridge. Copyright 2020 SHWAT | All Right Reserved. H4895. Consider the 7mm, 300, 338, and 375 Remington Ultra Magnums. Should I consider another upper? The 24 Nosler is exceptionally accurate and mild mannered and has cleanly taken numerous midsized big-game animals. Make sure to watch till the end. Like the grendel though you probably don't want to run high pressures on an ar bolt though. Joined: Jun 2002. was not, and the .243 Win. Follow up to the above. My speed is significantly slower ( 50 FPS) than Gavins at 2552 FPS with an SD of 6. The 6x45 is the .223 Rem. Thats only a minor impediment for serious riflemen. Photo shows 5 popular short rounds for the AR 15 platform, same short action the Hornady 6mm ARC is engineered to fit. Read it here. 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. Also 6X47 has also interested me. NOTE: This 6mm ARC reloading data is intended for use in bolt action rifles safe for pressures up to 62,000 psi. The hardest thing about ladder testing for the 6 BR is deciding which load is the best because they are so good. Arguments amongst experts (real and self-delusional) spewed forth with ferocity. Factory match rounds start at 155 grains and go up. Whats more: Its already SAAMI approved! Long-range precision shooting is one of the fastest-growing segments of the shooting sports. I therefore feel that Hornadys claimed performance data is feasible. The 6mm ARC is basically the 6.5 Grendel necked down to hold a .243 bullet with the 30-degree shoulder pushed back a smidgen. The 6mm ARC was built by necking down the 6.5 Grendel. Geissele fixed gas block was retained with no change in brass ejection pattern or bolt speed. The 6.5 Creedmoor shoots 6.5mm/.264 class projectiles while the 6mm Creedmoor is necked down to shoot 6mm/.243. Hornady is claiming its 6mm ARC will yield 2,750 fps with a 108-grain ELD-M bullet from a 24-inch barrel. 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. Or hunting? The 24 Nosler is a terrific performer, so dont let its small size fool you. Alaska. [5] 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. Unlike the NGSW the 6 ARC is a standard cartridge fired from an AR-15. Sort by. | 0 comments. 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. But no matter, new is new. 22420 C.O.L. Would love to get this thing shooting consistently under .5 with enough speed to reliably ring steel at 1000. So adopting the cartridge should be, for many shooters, convenient and affordable. Clearly better to galivant around the countryside with then an AR10. 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. ELD-Match, and Berger 115-gr. 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. the problem is your average guy wants to shoot a long ways, they don't get the fast and light principles. 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. just get a 6mm hagar. With this testing behind me, I must say it was fun, I enjoyed it and will keep testing as new ammunition is available. Full house loads will likely burn about 27- to 29-grains of suitable powders such as H4895, Reloader 15, and AA 2520, so handloads should be relatively inexpensive to build. 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. It is NOT for use in AR-15 style (gas gun) rifles. I cant speak for the ARC, but for the 6BR. That was the era of increasing muzzle velocity. .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. This is fortuitous, as it is a delight to reload and seems to like just about all the bullets Ive tried in it. Jan 13, 2021. I had three high capacity magazines using white followers, two 17 rounders with green followers. Given this or your typical AR10, no contest, the 6 ARC is much easier to carry. However, the 6mm BR is superior at 300m and beyond. I purchased a 6mm ARC barrel from Brownels when they first came available. SPC, 350 Win. You can get a 6 to 6.5 pound rifle which can shoot high B.C. 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. A fun challenge. Barrel-length is an issue. Messages. and 6mm Rem., but it pushes them a little faster. Years ago I authored an article titled Lies, Damn Lies, and Ballistics. 07-08-2022, 07:47 PM . Second, it was chambered in the delightful Winchester Model 70 Featherweight, which was a major factor in the .243s huge success. 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. Her 6mm Creedmoor rifle is light and handy and shoots like a house afire, and recoil and muzzle blast are modest. ZevTech, 16 Proof Research .223 Wylde barrel, Leupold Optics Mark 6, 3-18 with a David Tubb DTR reticle and Black Hills 77 Grain TMK. 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. Campfire Outfitter . An eighteen-inch barrel, maybe even a. 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. It would seem to make a dandy handgun round as well. Im interested in a direct comparison to the 224 Valkyrie and the 6 mm ARC. All of these are heading in the opposite direction. Low recoil is also noted. Jeff, did you mean to type - 6.5BR? Another interesting development is the 6mm Dasher that was developed by Al Ashton and benchrest gunsmith Dan Dowling. As for the 6ARC, I would take a vital shot at 600 meters without hesitation given a solid platform. Fast is better but slow means mo? Ballistically, thanks mostly to heavy-for-caliber, high B.C. Even with the cost of the Proof Research barrel it doable. bullets straight and seated above the powder reservoir. Range Report 6mm ARC vs 6 PPC vs 6 Grendel. 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. I have a precision set up AR in 224 Valkyrie. It will be interesting if they chamber this in micro-action bolt carbines like the Grendel has been. 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 IRMT upper locks the barrel in place with unparalleled rigidity. Claims for the 6mm ARC are that it is better in every category. 100-300m: Consistent 100 meter groups in the .60 -.75 inch range, 2.5-3.0 inches at 300 meters were the norm. Why step up to a loud, hard-kicking 300 PRC when youre dropping your deer with your 6.5 Grendel as far as you can shoot in your hunting field? 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. As such, SAAMI maximum average pressure is set at a relatively mild 52,000 psi. bullets for the Hornady 6mm ARC. You may know one or two more. In my next story Ill be deep-diving on the CMMG Endeavor 20 6mm ARC AR-15, and will be stretching its legs to greater distances. H2O, and a 6mm BR, around 39.0 gr. I hired a Mossberg in 243 Winchester to take this multi-tined TX Hill Country whitetail with a single shot. All gunsmithing procedures should be carried out by a qualified and licensed gunsmith at their own risk. Head diameter is .441, a bit less than the .535" head of the short-lived 243 WSSM which was a lot faster than the ARC. 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). 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. | all4shooters, Hornady's NEW 6mm ARC & Odin Work's Barrels - www.gunsamerica.com, gununiversity.com | 6mm ARC Released / Hands-On Testing and Comparisons, by Ryan Cleckner 3 June 2020, https://en.wikipedia.org/w/index.php?title=6mm_ARC&oldid=1137943385, Articles with unsourced statements from July 2020, Articles with unsourced statements from September 2021, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 7 February 2023, at 05:30. Probably not. It would also be used as a deer rifle for new shooters (small deer, sitka blacktails). Or it fits the extra-short AR-15 platform rifles beloved and preferred by many shooters. It uses the ever-effective Hornady 100-grain RN InterLock with H4350 powder.