Name a caliber,and there's probably folks walking around whove been shot by it.
Let's set aside the grandiose stuff.There's videos of terrorists in Iraq who've been literally blown to bits ,and still try to kill our people.When a ragged torso is still trying to shoot back ,it kinda puts the "stopping power" debate into the domain of the ridiculous.
Don't worry about caliber or material design of the weapon.Just shoot often and know what to do should Mr. Scumbag pay you a visit.I know from firsthand experience that most crooks arent going to start a gunfight over your car or wallet.It would be a dedicated burglar indeed who would soak up a magazine of ammo for your HDTV.
The more prohibitions you have, the less virtuous people will be.
The more subsidies you have, the less self reliant people will be.
-Lao-Tzu, Tau Te Ching. 479 BCE
The 1911 may have been in wars for 100 years, but Masetro Bartolomeo Beretta was arming the world 400 years before John Browning was ever a wet dream.