Another excellent powder to shoot and clean up after is Pinnacle 3f. I've shot four pounds of it. In all my testing, I have had excellent accuracy with sabots under 350 grain. I have not had good accuracy shooting conicals or heavy projectiles for some reason.

I shot 240 grain XTP'sin my KnightWolverine and never swabbed the barrel for 12 shots (I ran out of projectiles then). It took five patches to clean the barrel.