I carried, and still do, a Browning HiPower in 9mm. I have shot a LOT of folks with it, and I do need to qualify that it was with "non standard ammo", using '69-'71 vintage SuperVel ammunition. Granted, this was early generation "Hollow Cavity" stuff, but it put them down. Shot placement always comes into play, and if you can't shoot what you are carrying, while under STRESS, then unless it is an "Area" weapon, it dosen't matter what the caliber is !!!!!