The smallest cartridge I'd consider on Black bear protection would be a 44 mag. I would not want to piss the bear off with 10mm, 357, or a 40.

A rifle would be better.

My two cents worth. If you don't like it, that's ok.

I prefer classic.
Semper Fi
I used to run with the hare. Now I'm envious of the tortoise and I do my own stunts but rarely intentionally