Question: 45 colt how many grains of smokeless powder?
Answer: Cartridge loads. The . 45 Colt originally was a black-powder cartridge, but modern loadings use smokeless powder. The original black-powder loads called for 28 to 40 grains (1.8 to 2.6 g) of black powder behind a 230-to-255-grain (14.9 to 16.5 g) lead bullet.