thanks for the replies. You are correct about loading bullets, I wouldn't want to deform the tip. My experience has been with a patched ball, black powder, and a hawken. After about 2 or 3 shots, the only way to get the ball down is to bounce it. It goes in easily, but just about an inch off the powder, it stops.
I have some powerbelts for my new sidekick, I will see how they load.