When I replied the first time, I should have just said, biggest cal you can find, (and mags to go with----for bear.) I've harvested Bear with Rifle and bow and arrow, never with pistol. I carry a 44 redhawk in bear country. I also handload, and make some serious thumpers! But more important than all that--and the type of pistol you have--It's when that BEAR is within a few yards and less! MAD!, Injured, guarding a cub, or spooked, Or! ---let's just say, most will just piss themselfs!--so the less you have to figure out, (safety lever, chambering) the better the chance of firing a round if needed. Most of time, bears will run, And crackin a couple into the ground if needed, usually gets the same reaction.
Having said that, and wanting an autoloader, the Sig Pro in 40 cal--Bigger if made--not searched---might be a good choice. Single/Double Action auto, no safety lever to mess with, VERY good shooter, and mild recoil compaired to some of my others. jmho
