Atomic .308 Win Subsonic Powder Question

[79M1a-texas]

I purchased a 50 round of this stuff and am getting .75 moa at 100 yards. Uses the 175g Sierra HPBT, Using a stock Remington 700P with a Yankee Hill Machine can. Very quiet. The COAL varies from 2.781 to 2.796. The powder weight is 7.40-7.46 g of a unknown powder. I would describe it as a fine flake and shiny. Any thoughts on which powder comes closest with this weight?

 

[b6graham]

not trailboss haha

 

[Gunfighter14e2]

W/O seeing the powder I would guess Bullseye, 700X or Clays as I tried all of them around that weight range. Out of a canned AI with a S&B my side kick shoots them under .25moa. That said a 12 twist is not your friend with 175smk's as much past 130-140 yds, but they are fun to watch going end over end to the target. HTH