i have several omega muzzleloaders,most of which like 95-as much as 115grs pyrodex rs.several like the hornady 300gr xtp bullet,an the other likes the shockwaves....either the 250gr or the 300gr bullet.i personally like loose powder....haven't tried the blackhorn powder too much to give my honest opinion yet,some on this board like it and have good luck with it.an for what it's worth i can not stand powerbelt bullets,maybe good for some target practice ..imo....good luck with your new ml an let us know how she shoots.