If my memory serves John Browning invented the.25ACP to be the rimless equivelent of the old .22 long (not long rifle). The little autos seem to feed rimless ammo better so there's some logic there. About 20 years ago 2 guys I knew got in a fist fight & the smaller one shot the bigger one in the forehead & knocked him flat... then he got up & took the gun away & proceeded to beat him senseless. I guess a .25 is better than nothing but only slightly & since most are too inaccurate to hit a snake I carry something better.