Hi Alabama, a friend of mine used to have one of these. He tried all sorts of permutations of powders, balls, wads, fillers ,picket bullets etc and never was satisfied with the results. Whether they have changed anything since he had his (now sold) I don't know, but were it me, I would want to try one out first, before parting with any money. He never would let anyone else try and make it work so my practical experience of this model is nil, but I could never understand the need for the progressive rifling.