Home Forums Hunting & Shooting AR and Tactical Rifles 6ARC

I have three rifles in 6ARC. The savage 110 Switchback from Sportsmans. It’s a shooter with the Hornady Black 105gr BTHP. The magazine sucks as does the extraction and ejection. Two ARs. First one is a Ballistic Advantage 20”. Found a 1/2” load pretty easily with 87 Vmax and Lever. 2nd is a Faxon 20” match black. I haven’t yet worked up a load for it but it shoots cloverleafs with factory precision hunter 103eldx. I guess I got lucky with the cheap barrels. I bought whatever ammo I could off the shelf to get brass and ended up with a good mix of the Black, Match and Precision Hunter. Definitely looking forward to brass being available on its own.

I hear nothing but good things about the ARC and it looks like the ideal chambering for the AR15 platform. I’ve said it a thousand times but for me I don’t care for the 5.56/.223 and only have 1 in my battery and that’s only because it’s such a common round used by NATO. The other ones are 7.62x39..308..6.5G..etc. The Grendel just “happened”….actually an ex mil guy that I’m casual friends with has been having a lot of fun with the grendel so I’m trying it and liking it except that I think the ARC makes more sense ballistically speaking for my uses.

I do appreciate all the firsthand information about both calibers from guys that have “BTDT” with the newer offerings. 👍🏼

Anyone with experience with the Rainier Arms 6 ARC barrels?

Anyone tried a load of lighter weight bullets in the ARC? Something in the 70s or so, curious if you could get consistent accuracy with speed since it was designed around the longer heavies?

For any purpose less than benchrest, light bullets are never a problem accuracy-wise. The only problem you might encounter is if they are lightly constructed and the fast twist shreds them. I've had that problem with bullets like the Hornady SX and the Sierra Blitz but not with other light bullets.

I did load up some test loads for the son with 87 gr. Vmax. Be a bit before I can get the loads to him to test.

I've loaded 90-grain ELD-Xs in the 6mmAR, which is almost the same thing (shoulder is a little taller than the ARC round). I think 31.0 to 31.5 of LVR wanted to shoot but that was the only time I messed with it, and I did not chronograph.

Would a berger 95vld be problematic in ar platform for COAL?

Id wager the Berger 95 VLD would be a fine candidate for the 6mm ARC. ARC was designed to function well with long slender 103 gr to 108 grain bullets. though does very well with lighter projectiles as well.

load accordingly for gas gun or bolt gun pressures & good results may be expected with a variety of propellants.

Bolt gun example below with a slow yet respectable target loads.

Just didn’t know if length was a issue for the vld style bullets in the 6arc ar15 style mags

I built one using one the brownells faxon barrels. It was 18inch with mid length gas tube. What I know now I should’ve waited and bought a 20 inch barrel with rifle length gas tube better yet one with rifle +2 length. Mine was way over gassed ended up putting a gas block on it. One day it would shoot cloverleaf 5 shot groups. Next day same load shoot like chit. I tried leverevolution, varget, like is said shoot good one day horrible the next. I chit canned it sold the upper to a buddy with bolt for $100 bucks I told him the issues he didn’t care. When it would shoot it shot 95gr Berger VLD’s very well. I keep hoping Ben at Bison Armory will start chambering the 6 ARC soon as he does I will get back in the AR15 6 ARC game. I do have a savage 110 switchback in one I shot couple times as stated the magazine on them suck bad.

Got most of the parts and pieces here to put a 6ARC upper together. BA 18" and Superlative AGB should be here tomorrow. Got 200 rnds of 103ELD-X to start with. Based on what I'm hearing though I'll probably load 100 Sierras or Hornady 100 BTSP. Hornady's Black and ELD - X and M are proving to be explosive on 'yotes and somewhat less than lethal on hogs.

Anyone using the JP SCS on a 6ARC 18" RLGS, 'standard' weight BCG, and suppressed? If so, which model SCS and did you have play with springs?

You’ll have a blast. I love my 18” Aero upper. It’s been accurate with the 105 and 108 Hornadys. Decent with the 103’s. I liked it so much I snagged one of the Howas as well. Still ringing that one out but it’s just a fun cartridge. I kinda think of it as a heavy 5.56. 105 class bullets about the same speed and BC as a 5.56 with 75-77’ish class without much extra recoil.

Here is mine. Shoots 108gr ELD Match factory under a 1" at 200yds

I purchased a 6mm ARC Odin works 21" xl rifle length gas system w/ bolt carrier and adjustable gas block combo. I ran into some issues with it cycling the next round had to buy a reduced power spring and tweaked the gas block for it to run right. It cycled ok after that.. I wanted to run a jp spring instead so I ended up drilling the gas tube port hole a little bigger, I put an old cleaning rod inside the barrel as a stop after it was done i installed jp spring tweaked gas block again after that it and VOILA! ran flawlessly. I'm shooting .43" inch groups all day with 107 Sierra match kings charged with LEVERevolution 29.3.. powder is dirty though going to try out Winchester staball match soon, work up a load with that. But over all I am satisfied with the barrel after the bigger port hole was drilled bigger, I emailed ODIN and told them they need to fix that issue.







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Mines an 18" stainless nitride ballistic advantage barrel on an areo m4e1 upper and lower and 15" m1 handgaurd. I went with the fixed gen 3 prs mag pul target stock and adjustable triggertech trigger. It has a bushnell dmr2 3.5-21×50 on it.

I haven't been that impressed with the accuracy so far but I've just been shooting factory Hornady to make brass. I need to dig it out of the safe and try some handloads. It's been mostly in the 1-1.5 moa range with factory stuff.

My old 6.5 grendel 18" black hole weaponry 3 groove has spoiled me. It shoots 123 amax Amp bullets into one ragged hole and does it consistently unless I'm shooting bad that day. I bought over 5000 of those bullets when they switched to eldms at a pretty good discount from a local dealer. I sold a few to fire members to help them out and shot several hundred but I've still got maybe 3000 left.

I was hoping my arc would shoot like my grendel but it's no where close yet. I'd like to get a mini howa in arc for my kids. My 10 year old still thought the grendel kicked more than he wanted. He's got a cow tag this year so I think the grendel may be better for that anyways. I could load him some 100g ttsx or 100g partitions and he might like them better. Last year I loaded 129g ablrs because we were in an area where shots can be long and I wanted a bullet that would open at longer range with grendel speeds.

I'm not going to let him take a linger shot at elk with such a small round so I don't need to worry as much about bc and low expansion velocities.

Bb