My S&W Airweight with 158gr +p semi-wadcutter hp's. Pretty rough to shoot.
I think there is a doctor that can help you overcome your fear of 1911 pistols!
ETA: By far the most painful handgun I ever fired that I immediately stopped, was a Taurus Titanium snubby, ported, .357 magnum with 125gr +p rounds. It would blind you and hurt your hand like being beat with a two x four. This is the little terror: