MEGA 7mm-08 AR Finished (with pics and velocities)

[stooxie]

Hello all,

I finally got my barrel from Black Hole Weaponry, what a beautiful piece of work! I completed my 7mm-08 deer slayer.

This thing went together easily, everything fit just as it should, bolt headspaced with no trouble, passed all the function checks. Not having to time a barrel nut or align a hand guard == priceless. BHW added a second set screw dimple for me which lined up absolutely perfectly with the Syrac gas block (distance between centers is 0.500").

Here's the build list:

Lower:

MEGA 308 MTS Megalithic upper and lower
Geissele SSA-E
UCWRG Grip in OD
CTR in OD
"Standard" 7 inch buffer tube, Mil Spec, 7075
DPMS 308 buffer and spring
Noveske STS 60 degree selector

Upper:

BHW 7mm-08 16" barrel, standard profile, black oxide finish
Syrac Gen II adjustable gas block
Spike's melonite gas tube
Manticore Arms Eclipse flash hider
RCA 308+ BCG
AXTS Raptor charging handle

Weighs in at just over 8.5 pounds.

Hopefully I'll get to shoot it this week. I'll post an update when I do.

-Stooxie

[GLSHOOTER]

That's downright outstanding.

Greg

[stooxie]

Ok, I took it to the range today. Everything went great. Fired the first shot, brass ejected at about 1:30, closed off the Syrac about 75%, brass now ejects at 4 o'clock. That was easy! Spent casings look great, no extractor bite marks or scuffs, necks still well formed.

I did chrono some rounds, just the few different kinds I had. Again, 16" barrel. Distance from the muzzle to the chronometer was about 10 feet.

PPU blue box, 140gr PSP
Advertised MV: 2854, chrono: 2540 - 2575.

Federal Fusion 140gr
Advertised MV: 2850, chrono: 2641 - 2656

Hornady Whitetail 140gr
Advertised MV: 2840, chrono: 2548

I guess the Federal Fusion powder must develop it's pressure more quickly.

Ballistics calculator shows that a 140gr bullet, BC of .39 with a MV of 2641 has 1817 lbs of energy at 100 yards, 2417 fps. More simply stated: very dead deer!

Awesome!!

-Stooxie