I had a 1911 as a kid. They used them and the tommy gun in the 20s and 30s because the same ammo fit into both guns.

Normally people carried a 38 not an automatic. Killing in a set up you get close behind someone in a place they felt comfortable in and get two in the back of the head with a 22.

Would not use one from the front because it could take you 5 to kill him and in the meantime he is shooting back at you.