But I still think you'd opt for your loved one to have the bigger gun in the situation I described, as long as they were capable of handling it and were accustomed to at least firing it.
What do you think of this:
MEU SOC .45 continues to provide stopping power for 31st MEU.
That's the key. When we went looking for a firearm for the wife, the first priority was whether she could handle it. She wanted an auto, but couldn't rack the slide on any of them until we happened across a Star M30 9mm.
IMO, shot placement is primary. Caliber is secondary. A .22 to the head is going to do a lot more damage than a .45 to the toe.
But, as you point out, practice is more important than anything. If you can't hit what you're aiming at then the tool is useless. (or, worse)
MEU SOC .45 continues to provide stopping power for 31st MEU.
.45 is a good round. I've got a 1911A1/Para.