Comments on: 6mm ARC Cartridge — SAAMI Specs, Build Requirements, Videos

By: Anthony

Anthony — Tue, 22 Jun 2021 19:48:53 +0000

It’s been consistently about $2 per round for a 6mm rifle while I can get 5.56 rounds for about 70 cents a round or less. Doesn’t make any sense.

By: Wes

Wes — Sat, 23 Jan 2021 22:33:06 +0000

Purchased a 6mm Arc upper from Sanders Armory. It took 4 months to come in. Brass is still back ordered. Made brass from 6.5 Grendel Cartridges. After finding the correct C.O.L. length. It surprised me by shooting 1 hole 3 shot groups.(Speer 75 grain HP on top of 25 grains of IMR 4895.)It had moderate recoil and primers were did not show pressure. Moving load to a Speer 100 Grain Spire-point. and 24 grains of IMR 4895. Should be interesting.

By: Rick

Rick — Sat, 07 Nov 2020 23:28:35 +0000

I ran the Hornady 108gr ELD through the Berger bullet stability calculator after looking at targets fired by various people with 7.5 and 7.7 twist barrels. The groups showed signs, at least to me, of not being adequately stabilized which is why I went to the calculator. According to the calculator a 1:7 twist barrel is necessary to adequately stabilize that bullet.

That makes me wonder why Hornady chose a barrel with too slow a twist after all the development work they did.

By: Pete

Pete — Sun, 23 Aug 2020 16:32:42 +0000

I ordered a 24” barrel from Brownells. I plan on doing a build when parts come available.

Personally, I think this is the perfect choice for an AR Velocities for long, high BC bullets are perfect for long barrel life and excellent accuracy.

Already adopted by one Army Spec. Warfare unit, this cartridge has lots of potential as a commercial offering as well.

With the current political situation, it’s most likely going to take me a long time to get all the parts together.

By: Hart Johnson

Hart Johnson — Thu, 20 Aug 2020 05:20:21 +0000

I like the cartridge but the dam name sucks. Why call a cartridge an Arc defined as part of a circle ⭕️. They should’ve just left it at A.R.C. Advanced Rifle Cartridge. Arc is just plain silly

By: steve

steve — Fri, 24 Jul 2020 22:07:50 +0000

It is going to be interesting to see bolt life. The only powders that is available commercially that will get 105-108gr bullets to 2750fps under 52ksi pressure are temperature sensitive ball powders.

By: Derrick Bunn

Derrick Bunn — Fri, 24 Jul 2020 10:50:33 +0000

I wonder if this will make inroads in benchrest, when better brass is vailable?

By: Matthew Doherty

Matthew Doherty — Fri, 24 Jul 2020 03:01:23 +0000

I really hope this takes off. I love the concept and would likely re-chamber my 6mmBR into this for ammo availability.

By: Bruce

Bruce — Fri, 24 Jul 2020 00:01:37 +0000

6mm PPC?