Try a clone of the military match M852 round.
Heavy military, FC, or Lapua(best) brass, Fed 210M, 165 gr. Bal Tip and 42.2 grains of IMR4895.
From a 22" barrel expect to see about 2580 fps, and if it doesn't group pretty well your rifle may be sick.
It hasn't been the best in every 308 I've shot, but it has been very good in all of them.
mathman
