I've got experience with both the LR and magnum frame NAA cap and ball revolvers, they're fun lil' pistols and quite useful! I load my magnum with 2.0 grains of Alliant Bullseye, the LR frame gets a charge of 1.0 grain of Bullseye. I'm getting close to 1000 FPS with the LR, 1200 from the magnum frame.