I use BE-86 for some of my lower pressure cartridges such as .38 Special and .45 Colt. For .44 Magnum I find that 9 grains of BE-86 gets me 1040 FPS out of a 4.6" Super Blackhawk. I don't recommend sizzling hot loads with that powder. I do not recommend Power Pistol for the 10 mm, .357, or .44 Magnum as the muzzle flash will be excessive to say the least.