Its lighter bullets are at home here. This data and these techniques can not be assumed to be safe. We have the Brass in stock along with Dies. Efficient. Hornady 6mm ARC brass looks to be of good quality, is fairly consistent and should give you a number of reloads as long as don’t lose them, or are pushing for maximum velocity. 2730 FPS and way over-pressured though SDs were single digits, groups were all just over 1.25 MOA. H-4895 is closer to the “6.5 Grendel” sweet spot, so I thought it would be worth a try. | 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, “With the announcement of the Hornady 6mm ARC cartridge, an incredible 22 companies plan rifles for the consumer market, with more on the way.” – Tactical Life Gun Magazine: Gun News and Gun Reviews, CMMG Announces New Rifles Chambered in 6mm ARC, https://en.wikipedia.org/w/index.php?title=6mm_ARC&oldid=1006673377, Articles with unsourced statements from July 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 14 February 2021, at 04:08. FIRST THING … I’ll be publishing a full overview story covering this rifle, but in the meantime, here are some specs from the CMMG Product Page: CMMG’s ENDEAVOR line of rifles are now available in Hornady’s new 6mm ARC (Advanced Rifle Cartridge). Maximum Cartridge Overall Length is 2.26”. 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). Equally at home in AR-15 platforms and short or micro action bolt guns, this load is suitable for applications from personal defense to match shooting, hunting, and military and law enforcement. After forming some cases I shot Berger 105 hybrid targets over 27.5 grs. 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. The cartridge makes use of 6 mm (.243) 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. The 108 grain […] The 6mm 109’s offer several advantages,” said Bryan Litz, Berger’s Chief Ballistician. The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice. Here's my question, in the spirit of the upcoming deer season, if you could only choose between 6.5 Grendel and 6mm ARC to hunt with for the entire season, which caliber would you choose? The 6mm ARC produces a larger splash signature that allows shooters to self-spot impacts and make rapid adjustments. Let’s break down a few things about this number: So if  you have a 24″ bolt-action 6mm ARC rifle, that’s the velocity you should expect. I decided that since I didn’t have any load data, I would have to generate my own! If you are looking for 6mm ARC ammunition, components, or parts/gear, check out the following: Don’t miss out on Ultimate Reloader updates, make sure you’re subscribed! With the release in 2020, Hornady also launched three factory loads with 103, 105 and 108 gr (6.7, 6.8 and 7.0 g) bullet weights and advertised G1 ballistic coefficients of .512, .530 and .536 respectively.[5]. 6mm PPC vs 6MM AR I have plans to re-barrel a 6.5 Grendel RAP and was thinking to go to a 6mm AR. As a follow-up exercise, I plan to use QuickDesign software to create a more accurate model for the 6mm ARC. Above: 6mm ARC case capacity measured 33.96 grains H2O. WARNING: The load development techniques and load data shown in this video are experimental and are for DEMONSTRATION PURPOSES ONLY. Based on my best estimation, my H-4896 108 ELD-M load would produce approximately 2,754 FPS in a 24″ bolt-action rifle. 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. The 6 mm ARC’s lineage goes back to 1944 and the 7.62x39 mm, which was popularized by Mikhail Kalashnikov and the AK-47. Always used manufacturer’s published load data! Use load data at your own risk. Rifle accuracy tips. Important to note that Quickload reports the chamber pressure using the combination of components above is 3900 PSI over SAAMI spec and is therefore a dangerous load that should not be used. 6mm ARC: Fact or Fiction? Given the ideal long-range bullet dimensions, the best long-range 6mm bullet will be around the 112 gr. I used the lathe to modify a 6.5 Grendel bushing die and ended up with a 6 ARC die. 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). Best site for precision rifle accuracy and accurate cartridge shooting. What’s the plus delta on each? I’m interested in a direct comparison to the 224 Valkyrie and the 6 mm ARC. [7] The 6mm ARC can also be a suitable chambering for shorter "mini-action" bolt action rifles. The 109’s are tailored to cartridges such as 6mm Creedmoor, 6mm BR, 6 Dasher, 6XC, 6BRX, and 6×47 among others. The barrels use a rifle length plus (+) 2-inch gas system. There’s more coming related to 6mm ARC! Hi Gavin, I also shot mine with an Ultra 9 direct-thread suppressor. Click here to view the cartridge and chamber print on the SAAMI website. About AR15.COM. What’s more: It’s already SAAMI approved! This is what they had to say about the 6mm ARC vs 6.5 Grendel: “The 6mm ARC delivers comparable performance from a wider assortment of bullets, making it a more versatile choice.” – Hornady. The Brass is better than 1/2 Price and easily available. 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 6mm ARC is a factory cartridge which has many similarities with the 6mm AR wildcat cartridge. He is also listing the 6mm ARC barrel, no pricing as of yet though. Using the same bolt and magazine as the 6.5 Grendel, the 6mm ARC capitalizes on the enhanced ballistics of 6mm bullets.