6MM ARC 14 months later

[David Milisock]

I do know that for a gas gun 6 ARC 110 A TIPs. 26 in barrel 7.25 twist Hornady 11th edition max 29.7 grain Leverevolution will average out to 2758 fps. No signs of over pressure in new Starline brass.

It works for steel @ 1 mile. Lots of people told me it cant be done. Others before me have done it, I have now done it, I may bump it a tenth or two in grains. I want to try 2150 yards next.

Have a great weekend.!

Cool, I like the small efficient cartridges, less everything but good performance. A fun cartridge.

 

[rickt300]

I do know that for a gas gun 6 ARC 110 A TIPs. 26 in barrel 7.25 twist Hornady 11th edition max 29.7 grain Leverevolution will average out to 2758 fps. No signs of over pressure in new Starline brass.

It works for steel @ 1 mile. Lots of people told me it cant be done. Others before me have done it, I have now done it, I may bump it a tenth or two in grains. I want to try 2150 yards next.

Have a great weekend.!

Pushing the old 250 savage speeds, bettering even.

 

[CaptainMal]

Just used my AR15 in 6ARC to shoot plate competition at Manatee this morning. Had 48 rds in the new barrel when I started. Hit 19 out of 25 shots at 600 yards. Often, if the wind stayed the same, I had multiple hits near in the same part of the plate.

Good start and now I will tune a bit before next monthly match.

 

[jelenko]

Just used my AR15 in 6ARC to shoot plate competition at Manatee this morning. Had 48 rds in the new barrel when I started. Hit 19 out of 25 shots at 600 yards. Often, if the wind stayed the same, I had multiple hits near in the same part of the plate.

Good start and now I will tune a bit before next monthly match.

What's the size of the plate?

 

[Retired shooter]

Size of plate, bullet, and powder data. Barrel length. More info please. 600 yards was super easy .

Didn't have much problem until 1400 yards then took 4 rounds to nail it. One mile target 24 in X 24 in. @ 165 deg. 12/15 mph wind @ 180 / 185 deg. Found a new addiction. Damned that was fun.!

To all a Super Sunday.!

 

[Ledd Slinger]

I shoot 2, the 105 Hornady Black factory that clocks just under 2,500 FPS out of my 16" Ballistic Advantage barrel.

The second is a reload, 103 grain Hornady ELDX and LeverEvolution powder, (not at home and I can't recall the charge weight). I'm comfortable with 2,535 FPS, I know the longer barreled, 22"-24" AR does closer to 2,700+ FPS but that long tube sucks in a truck or in a saddle scabbard.

Yeah I think anything over 20” kinda defeats the purpose of an AR platform. Even going to an 18” or 20” barrel makes a considerable difference in velocity over 16”. Anything longer than 20” might as well be built as a bolt gun in my opinion

 

[284winner]

WOW am i suprised a 6 arc out preforms a 223 at long range! What amazes me about this new magic cartridge is if you compare it to a 6.5 grendle ( both using the Sierra 107 at 2700 fps) they are so close I don't see any ballistic advantage to investing in all the stuff to change. Hornady and all the magazine writers sure found alot of people with alot of extra cash!!!!!!!!!

The 6mm 107 vs 6.5 107 are not real close in performance. The BC advantage of the 6mm 107 is far superior to the 107 in the 6.5. Maybe not enough difference to spend loads of money on but definitely a difference.

 

[David Milisock]

Yeah I think anything over 20” kinda defeats the purpose of an AR platform. Even going to an 18” or 20” barrel makes a considerable difference in velocity over 16”. Anything longer than 20” might as well be built as a bolt gun in my opinio

Yeah I think anything over 20” kinda defeats the purpose of an AR platform. Even going to an 18” or 20” barrel makes a considerable difference in velocity over 16”. Anything longer than 20” might as well be built as a bolt gun in my opinion

If I was thinking like a DOD professional, I may want 2 uppers in 6MM ARC, one in a 16" LPVO configuration for the insert and extract and a 20" or 24" with a proper long-range optics packed on back in a protective case.

Insert, creep in nearby, a quick push of a pin and your 16" CQB becomes a 24" 1,000-yard DMR. Redeploy assess, if the jobs done, a quick push of a pin and the DMR becomes your CQB.

 

[David Milisock]

The 6mm 107 vs 6.5 107 are not real close in performance. The BC advantage of the 6mm 107 is far superior to the 107 in the 6.5. Maybe not enough difference to spend loads of money on but definitely a difference.

I'd evaluate your thought process, I have a 6MM ARC and a 6MM Remington. I've been shooting 6MM for nearly 40 years and I am a believer, but I also believe in utilization toward the design, if you want to get a 6MM ARC and love it. Build it and use it closely to what it was designed for, close in deer varmints CQB games.

The 6MM ARC is a military SPR, DMR AR15 cartridge and if you use it in a process that emulates that process, you're going to be happy. An AR15 in 6MM ARC that's 16" or longer will deliver 9MM x 19 muzzle energy at 1,000 yards, over 3 times the energy of 5.56 x 45.

In my experience the 6MM ARCs strong point is that it's a smidgeon better that the 20" AR15 A2. I waited well over 45 years for that smidgeon better. In close in different barrel lengths, it is as good handling as the M1/M2 30 Carbine and the M4 in 5.56 x 45. That smidgeon better is wind performance and energy out past 300 yards.

That does not make the 6MM ARC a 400-yard deer rifle, it is very efficient but a 243, 6mm Remington, 6-06 and many others with equal barrel length will push the heavy 6MM projectiles vastly faster than the 6MM ARC. They will also push light weight varmint bullets so fast that the velocity outperforms the improved BC of the heavy weight projectiles. I push a 75 grain Hornady VMAX to 3,900 FPS.

 

[284winner]

I'd evaluate your thought process, I have a 6MM ARC and a 6MM Remington. I've been shooting 6MM for nearly 40 years and I am a believer, but I also believe in utilization toward the design, if you want to get a 6MM ARC and love it. Build it and use it closely to what it was designed for, close in deer varmints CQB games.

The 6MM ARC is a military SPR, DMR AR15 cartridge and if you use it in a process that emulates that process, you're going to be happy. An AR15 in 6MM ARC that's 16" or longer will deliver 9MM x 19 muzzle energy at 1,000 yards, over 3 times the energy of 5.56 x 45.

In my experience the 6MM ARCs strong point is that it's a smidgeon better that the 20" AR15 A2. I waited well over 45 years for that smidgeon better. In close in different barrel lengths, it is as good handling as the M1/M2 30 Carbine and the M4 in 5.56 x 45. That smidgeon better is wind performance and energy out past 300 yards.

That does not make the 6MM ARC a 400-yard deer rifle, it is very efficient but a 243, 6mm Remington, 6-06 and many others with equal barrel length will push the heavy 6MM projectiles vastly faster than the 6MM ARC. They will also push light weight varmint bullets so fast that the velocity outperforms the improved BC of the heavy weight projectiles. I push a 75 grain Hornady VMAX to 3,900 FPS.

I'm certainly not calling it a 400 yard deer rifle but I am saying it'll easily get the job done as one. 2100 fps impact velocity with that 107 with the ARC and over 1K of energy isn't slouchy for such a small cartridge. The 6.5 grendel isn't considered a 400 yard deer rifle either but many have been killed at 400 with one. My comment was simply comparing the ballistics of the 6ARC to the 6.5 Grendel with that 107 Sierra. If I were using that rifle for deer hunting at 400 yards, I'd opt for the 6ARC over the 6.5 Grendel using that particular bullet. That said, it wouldn't be the bullet I'd use in the Grendel so only making the comparison. I have zero experience with the 6ARC but plenty of experience with the ballistic comparisons of bullets. I'm sure it'd be a fun cartridge to shoot in the AR platform tho.

 

[Ledd Slinger]

If I was thinking like a DOD professional, I may want 2 uppers in 6MM ARC, one in a 16" LPVO configuration for the insert and extract and a 20" or 24" with a proper long-range optics packed on back in a protective case.

Insert, creep in nearby, a quick push of a pin and your 16" CQB becomes a 24" 1,000-yard DMR. Redeploy assess, if the jobs done, a quick push of a pin and the DMR becomes your CQB.

The 6mm ARC is fully capable of 1000 yard hits on targets even in a 14.5” SBR configuration, therefor 16” would be capable as well. Watch video below if you have some free time. So again, there really is not a need for extra long barrels in the 6mm ARC.

 

[rickt300]

The 6mm ARC is fully capable of 1000 yard hits on targets even in a 14.5” SBR configuration, therefor 16” would be capable as well. Watch video below if you have some free time. So again, there really is not a need for extra long barrels in the 6mm ARC.

Personally I would prefer a 20 inch barrel to a 14.5 inch barrel with a suppressor on it. Needed or not I like the longer barrrel better for some tasks, varmint hunting , specifically shooting coyotes over bait at night.

 

[Ledd Slinger]

Personally I would prefer a 20 inch barrel to a 14.5 inch barrel with a suppressor on it. Needed or not I like the longer barrrel better for some tasks, varmint hunting , specifically shooting coyotes over bait at night.

For sure! But as I said earlier, I just don’t think the ARC really needs anything more than 20” to do what it’s really capable of doing. My ARC has an 18” barrel with a 5-25x scope and I’m happy. If a person wanted more energy for longer range hunting, I think a bigger cartridge would be a better idea than a little extra speed from the ARC.

 

[David Milisock]

I'm certainly not calling it a 400 yard deer rifle but I am saying it'll easily get the job done as one. 2100 fps impact velocity with that 107 with the ARC and over 1K of energy isn't slouchy for such a small cartridge. The 6.5 grendel isn't considered a 400 yard deer rifle either but many have been killed at 400 with one. My comment was simply comparing the ballistics of the 6ARC to the 6.5 Grendel with that 107 Sierra. If I were using that rifle for deer hunting at 400 yards, I'd opt for the 6ARC over the 6.5 Grendel using that particular bullet. That said, it wouldn't be the bullet I'd use in the Grendel so only making the comparison. I have zero experience with the 6ARC but plenty of experience with the ballistic comparisons of bullets. I'm sure it'd be a fun cartridge to shoot in the AR platform tho.

The only thing the 6ARC needs to be 400 yard deer rifle (if a 6mm can be that) is a strong bolt action, a 26" barrel and 25 grains more powder. In my opinion even them you're reaching with a too small a caliber.

 

[David Milisock]

The 6mm ARC is fully capable of 1000 yard hits on targets even in a 14.5” SBR configuration, therefor 16” would be capable as well. Watch video below if you have some free time. So again, there really is not a need for extra long barrels in the 6mm ARC.

I watched that video some time ago. It's not just about making hits, there's energy on target. If you want effective 1,000 yard rifle go with the longer barrel with any cartridge.

 

[Ledd Slinger]

I watched that video some time ago. It's not just about making hits, there's energy on target. If you want effective 1,000 yard rifle go with the longer barrel with any cartridge.

You’re right. But if we are talking about “energy” on target at long range, then we probably shouldn’t even be talking about the 6mm ARC. For coyotes and other varmints, it has plenty of energy. If considering long range hunting big game, I would highly advise you consider other options that will deliver much better energy.

 

[David Milisock]

You’re right. But if we are talking about “energy” on target at long range, then we probably shouldn’t even be talking about the 6mm ARC. For coyotes and other varmints, it has plenty of energy. If considering long range hunting big game, I would highly advise you consider other options that will deliver much better energy.

I bought the 6MM ARC in an AR15 because I thought it made sense as a general-purpose rifle. A 16" barrel in a light rifle that can carry an LPVO for playing CQB games and taking medium game (deer sized) at 200 to 250 yards and is accurate.

For varmint shooting I have bolt rifles in 22 RF, 223 and 6MM Remington, for heavy game I have other options.

Build the rifle for what the cartridge is designed for.

 

[284winner]

I bought the 6MM ARC in an AR15 because I thought it made sense as a general-purpose rifle. A 16" barrel in a light rifle that can carry an LPVO for playing CQB games and taking medium game (deer sized) at 200 to 250 yards and is accurate.

For varmint shooting I have bolt rifles in 22 RF, 223 and 6MM Remington, for heavy game I have other options.

Build the rifle for what the cartridge is designed for.

Pretty accurate description of that cartridge for sure.

 

[Ledd Slinger]

Tried some Honady Match ammo with 108gr ELDM bullets in my ARC to break the barrel in some more and harvest the brass. Shot a decent 5 shot group that was sub MOA at 100 yards. If it will do that with factory ammo, I’m sure it will shoot great with hand loads when I get around to testing.