I agree with Hawkdriver and manny, Power pistol & 135 gr. Gold Dot short barrel. It is very accurate in my revolvers, expands and penetrates well, even out of a 1.875" barreled S&W M642. It does buck and roar a bit though.
Practice load is an Oregon Trail 125 gr. flat point and bullseye.
Edited to add that the unfired bullet in the photo is a Hornady .451" 230 gr. XTP for size comparison.