6MM ARC 14 months later

[David Milisock]

My 6MM ARC is on an AR15 platform, it's an Aero Precision with a 16" barrel, it is all Aero with a Ballistic Advantage barrel ordered as an assembled upper from Brownell's and was designed to be a CQB/truck rifle.

Comparing it to my AR15 A2, my sons Stag Arms SR1 and my 2 M1 Carbines I can say that I'm satisfied with the result.

In close the 6MM shoots very well and is as fast acting as the Stag and the M1 Carbines, accuracy is far greater than CQB standards.

As the range increases the 6MM ARC accuracy outperforms all but the A2 until we get to 200+ yards then it is the leader of the pack. As the wind increases 200+ yard the accuracy edge for the 6MM ARC over the 5.56 (eitherM193 or M855) increases. The A2 with 69 grain Hornady improves the A2 performance out to 400 yards and 1/2 sized silhouettes are easily hit at 500 yards in light wind.

Reloading with LeverEvolution and Hornady 103 ELDX has seen loads matching Hornady published Data for a 16" barreled AR.

 

[Rodney]

I’ve just started messing with the 6 ARC and will say that it is a very accurate cartridge out of the AR platform. Mine has a 22 inch barrel but I’ve not chronographed it yet to see what kind of velocity I’m getting. Been shooting 90 and 95 grain projectiles thus far. Sub 1 inch groups at 100 yards is no challenge. I was a big fan of the 6.5 Grendel, but the 6 ARC is my new favorite.

 

[David Milisock]

I’ve just started messing with the 6 ARC and will say that it is a very accurate cartridge out of the AR platform. Mine has a 22 inch barrel but I’ve not chronographed it yet to see what kind of velocity I’m getting. Been shooting 90 and 95 grain projectiles thus far. Sub 1 inch groups at 100 yards is no challenge. I was a big fan of the 6.5 Grendel, but the 6 ARC is my new favorite.

I only have working firearms, and I've been waiting 50 years for the AR to be chambered in a cartridge that was suitable for CQB with the capability to take deer.

I like my AR15 A2 in 5.56 and take some varmints with it but the 6MM is deer legal in my State.

 

[762plinker]

I only have working firearms, and I've been waiting 50 years for the AR to be chambered in a cartridge that was suitable for CQB with the capability to take deer.

I like my AR15 A2 in 5.56 and take some varmints with it but the 6MM is deer legal in my State.

7.6x39

 

[David Milisock]

7.6x39

Except when we start talking reaching out beyond 400+ yards. The 7.62 x 39 is useful but in my opinion it's accurate reach is too limited for my concepts.

 

[dantiff2]

Except when we start talking reaching out beyond 400+ yards. The 7.62 x 39 is useful but in my opinion it's accurate reach is too limited for my concepts.

If you are limited to an AR-15 only then you are correct. It would be VERY hard to beat a good 6mm bullet in that 300-600 yard range.

 

[David Milisock]

If you are limited to an AR-15 only then you are correct. It would be VERY hard to beat a good 6mm bullet in that 300-600 yard range.

I specifically made the limitation to an AR15 platform, I wanted a durable field rifle for medium game, CQB to match the M4 and 30 Carbine in close and range extending beyond the 5.56 NATO.
With iron sights this rifles makes a very high percentage of hits on 1/2 sized silhouettes at 600. Placing a LPVO to move that range out farther.
I pattern my testing after the 9 hole review practical accuracy course.

 

[dantiff2]

I specifically made the limitation to an AR15 platform, I wanted a durable field rifle for medium game, CQB to match the M4 and 30 Carbine in close and range extending beyond the 5.56 NATO.
With iron sights this rifles makes a very high percentage of hits on 1/2 sized silhouettes at 600. Placing a LPVO to move that range out farther.
I pattern my testing after the 9 hole review practical accuracy course.

Nice! Sounds like you've done your homework!

 

[AckleymanII]

What is the muzzle velocity and your particular bullet?

 

[David Milisock]

Nice! Sounds like you've done your homework!

I did a great deal of shooting and reading over the nearly 50 years since I carried the M16. I wanted a rifle that was a go-to for 99% of my life and my experience with the Stoner platform has proven to me its reliability.
Not that I'm giving up any of my other firearms.

 

[David Milisock]

What is the muzzle velocity and your particular bullet?

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.

 

[alf]

I had two of those Aero uppers and wasn't impressed with either after 1200 rounds of wasted componants through them.

I never found 6 ARC Nirvana till I built a new upper around a Ranier Arms (Shilen) barrel.

Sold that too and built a 6 Hagar instead......

 

[David Milisock]

I had two of those Aero uppers and wasn't impressed with either after 1200 rounds of wasted componants through them.

I never found 6 ARC Nirvana till I built a new upper around a Ranier Arms (Shilen) barrel.

Sold that too and built a 6 Hagar instead......

Are you happy with anything you've made so far?

 

[AckleymanII]

alf loves trying new hot rods!

 

[David Milisock]

alf loves trying new hot rods!

Toys are fun but I needed a tool to last a very long time.

 

[alf]

Are you happy with anything you've made so far?

Of course.....

I sold the Shilen because it was a 22" tube, not knowing at the time I needed a suppressor, so I didn't want to pack around a 30" barrel.

I went with the Hagar for thermal use where speed wins at night. Better tool for the job.......

 

[David Milisock]

Of course.....

I sold the Shilen because it was a 22" tube, not knowing at the time I needed a suppressor, so I didn't want to pack around a 30" barrel.

I went with the Hagar for thermal use where speed wins at night. Better tool for the job.......

What job were you building the rifle for?

 

[280ai]

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!!!!!!!!!

 

[dantiff2]

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!!!!!!!!!

Nothing magic about it. I'm in no way a Hornady fan boy but they found something that worked better for the boys who got to try it against the bad guys in the sand box. This is worth a listen (with an open mind) if you're interested. Don't skip ahead or you'll miss all the meat and taters ; )

 

[David Milisock]

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!!!!!!!!!

My 16" 6MM ARC outperforms my A2 with all bullet weights out past 300 yards.