Question: Weapons sizes

[Griefbringer]

And measuring cannons by the weight of their ammo dates back at least to the 16th century. At a time when cannons fired spherical projectiles, there was a direct correlation between the diameter and weight of the projectile (cast from metal of a given density).

As for WWII era, British were not happy to designate all of their artillery pieces by the weight of the shot, so some of them were designated by the barrel diameter.

[RetLT]

A lot comes down to shot placement. A .22 to the right spot is more effective than a .45 to an extremity.

I carried a .40 cal Glock on duty and a .380 Walther off duty.

The .40 cal had plenty of stopping power and ammo. The Walther had less of both but was easy to conceal. I figured that I am not going to get into an extended firefight off duty and that if I shoot a guy 7 times center mass with hollow points and he does not go down I should just give him my wallet an car keys and apologize.