With heavy 30 cal bullets I have had great success with RE22 powder (three of my 30'06 rifles will do 2600 FPS with 220 Hornadys and 220 Nosler Semi Spitzers) My guns will take 2 grains over max loads. The groups run about 11/2 inch at 200 yards.These shoot much flatter than you would think.
Best Wishes.
