I told y'all handgun cartridges are all pretty much the same. Here's the numbers:
.45 ACP    370 ft/lbs
9 mm        421 ft/lbs
.40 S&W  375 ft/lbs
.39 Spec   349 ft/lbs
There's only so much a handgun can do. There isn't very much energy in the case, and the weapon is supposed to be operable one-handed. That's why the common self-defense rounds are about 3/8-7/16 inches in diameter, and deliver half the energy of the .30 Carbine, a "rifle" that's hardly worth carrying.