I would want a 10mm or 41 magnum as a minimum.
The 10mm and 41mag can cross over the power range.
Long barreled 10mm can surpass short barreled 41 mags.
Long barreled hot 41’s surpass’ the 10mm’s..
I have shot bears with the 41 worked well.
Be careful with 10mm ammo. Some of it is no better in performance than .40 S&W.
Federal, I’m talking to you.