I’d recommend something that you can carry in your pocket with the same knockdown as a .45. I carry a S&W .380 Bodyguard with Glazier (plastic pellet filled) ammo. It has the same lethality as a .45 ACP. It’s invisible. It only has a 3.5 inch barrel, though. I fired 1000 rounds before I carried it. I’m certain I could kill a target at 30 feet. I can hit one consistently at 50. Of course, I suspect all bets are off if they’re shooting back...
Also, if you use it, you’ll lose it. So go as cheap as you dare.
Thanks much.
How does one measure lethality so you can compare between guns? Is there a standard measure of some kind?