My TC Hawken in 54 cal with it's 1/48 twist likes roundball and most conicals I've tried.I use 90 grs. of ffg pyrodex, or 75 grs. of fffg.in my hunting loads, for both round ball and conical.The Great Plains hunter, 425 gr likes 85 grs of fffg. This one will be my Elk load this season,when I take the 54.