Kman
Blah, blah, blah
I've never owned a .25 but I think centerfire would trump rimfire.
My 1908 Vest Pocket is a great gun to shoot. It’s shockingly accurate. I have carried it with Hornady Critical Defense. Better than nothing.
If you can see down that narrow valley of a sight, they are indeed accurate. When I was a kid, I actually rested one and shot it at a 15 yard target and got about a 2 inch group.
But a lot of them will not.
For SD, you need to have the ability to STOP them.
Can't remember if it was Sig or HK messing around with something like that. .312 cal, 20mm, slight tapered case, pushes a 100gr about 1200fps, basically 9mm ballistics, but less recoil and 2-4 rounds more capacity in pistols
I'd go with .22LR...with match ammo. Most of the complaints about reliability are with el-cheapo bulk pack .22 rounds. Match rounds from RWS, Eley, or Lapua are a very different affair. Those work.
Even quality non-match ammo like CCI MiniMags. I don't think I have ever had a misfire with CCI.
And in the past, Remington Golden Bullets were similar quality. But no so much these days.
Never carried- but the LCP II in .22LR is a cool little gun and not bad to shoot either. Will be interesting to see if they do a Max variant on that one as a companion piece to the new LCP Max. 12 +1 of .380 is an awesome little package for a true pocket sized pistol.