The sweet spot for mine is 2950 using 44 grains of H4350. Mine also liked H4831 at 44 grains and similar velocities but the H4350 gave me better extreme spreads and standard deviation. I have had mine up and over 3000 fps with both powders but didnt group as well at that velocity. Reloader 17 may be another option for you to gain more speed. Im running a 26" criterion barrel and lake city match cases.