Real black powder if you can get it. 2f granulation. Pyrodex RS if not. A lot of shooters like triple 7.thanks very much. i was also wondering what powder you recommend for a 50 cal and what load? 50 grains 90 grains or somewhere in between?
I'd recommend starting at 50 grains with a .490 round ball with a .15 patch. Work your way up with the powder charge until you find your "sweet spot". You should end up at somewhere in the 70 to 90 grain area.