LOL my friend and good cheer

AND, all is not lost, I dare to opine, I believe that the great mystery of this mysterious said inaccuracy is indeed, not with the obviously very fine AR-10, nor the prestigious one whom squeezes the very fine Geissele Super Semi-Automatic Trigger (SSA) ... but the cartridge itself.

If you would allow me, and please excuse any conceit on my part, but the boattale cartridge is reknown for its LR (long rage) employment. In .30 caliber, some estimate after the skying phenomenon, DR (downrange) the natural psychics (gravity, crosswind trajectory) while the propelling psychics (velocity, kentucky windage) usually meet about 500 meters. Now, the boattail is remarkably and absolutely wicked at ranges of 500+ meters. However ... equally un-wicked at closet ranges. Because, as soon as the boattale projectile exits the barrel it's more or less unstable and it wobbles, for lack of a better expression, but "tightens" and the 500 meter threshold develops.

But I'm sure there are much better schooled individuals here that know this better than myself.

So my friend, as iron sharpens iron, as men sharpen men (Proverbs 27 and 17) look not to the I'm sure, the very fine AR-10 in which the prestigious force multiplier 12 grade personnel posses ... NO ... my friend, niether one, no sir. But simply use another cartridge of super grade status.

In my humble opinion, of coarse. : )