All I ever shot out of my Renegade was 100 gr Pyrodex and a 435 Maxiball. The gun has a steel but plate. It kicks of course, but not too bad. These must be light rifles if you're getting alot of recoil with 90 gr or less with a 320 gr conical.

Pyrodex likes to be compressed. When I feel the bullet hit the powder, I lean on the rod and compress about 1/4" or so.