I shoot the same omega as you and shoot 250gr hornady xtp's for practice and 250gr shockwaves for hunting. With 115 gr 777 i can get 3 touching at 100yrds and not much off that at 150 other than dropping a bit. I havent really shot too much regular black powder so im not sure how it works in an inline but I would think it would do just fine. I tried pyrodex and was very unimpressed with it and the shockey sticks werent worth the hype in my opinion.