The best reloads are .32 Short Colt, drilled to accept .27 Hilti / Ramset rounds. Most guns have a long enough firing pin blade to touch these off reliably, and a .311/.312 ball pressed into the other end makes your ammo complete. Cheap to shoot, and fun to buy ammo at Home Depot.
There are lots of pointers about this in the Antique forum, and online in general. I'm a coward so I stick with white Hilti rounds, I haven't been able to find the weaker (brown?) ones. In my "shooter" .32 RF revolver, this combination makes holes in paper every time. I have never taken the revolver outside and shot anything else, such as stacked sheets of plywood, to find out what this kitchen round is capable of. I can't shoot black powder at my indoor range, so this does the trick.