Michigander
Regular Member
What is your primary caliber? If possible, find something smaller in the same caliber.
If not,and u plan to go small. just go real small. You;d be surprised what a .25 or a .32 can do in a pinch. And you can be sure to have it in a pocket somewhere,no matter what you are wearing.
I'd have thought .25 was sufficient for penetrating with the faster FMJ rounds, but quite a lot of research has indicated to me that it isn't. A couple long time cops I talked to recalled dozens of cases where it failed to penetrate bone, even from contact distance to the head when people were trying to kill themselves. .25 , at least in a 3" or less barrel is a throat, eye or bizarre luck caliber. It lacks both the velocity and the weight to work properly and consistently.
In terms of mouse guns, .32 with FMJ or flat nose ball ammo such as Buffalo Bore, this is about the bare minimum for any significant chance at the desired ballistic effect of sufficient penetration to quickly disrupt the central nervous system of an assailant.
I'd call thumb safeties and the .25 ACP John Brownings biggest failures.