I'll stick with american pioneer powder co jim shockey's select FFF. The claims about not having to clean as far fouling buildup,we've already got now for sure with this and it's proven-accuracy,non fouling,consistant,excellent velocity,and easily measured per volume. We tested and comparedthis powder side by side with black powder,pyrodex,and 777,and select easily came out on top-all rifles/setups were exactly the same.