Tried IMR 8208 it didn't give top accuracy. My go to powder with 26 to 32 grain bullets, including lead free Varmint Grenade and Nosler BT Lead free is Reloader 10x. Groups around .25" at 100 yards, velocity is 4,085 fps in a 1:12" twist, 4,110 fps in a 1:8.5" twist barrel. Both shoot well with 25.2 grains in my barrels (Shilen & Pac-Nor). Winchester brass, Federal match or Remington 7-1/2 BR primers. For the heaviest bullets, 50 grain and above, I use Varget.
