All you really need for your SP101 are .38 specials.
Either the noise from the first shot will scare off an interested bear.....
or.....
you save the other 5 shots to stick in his mouth when he's on top of you.
Works just fine..

But no... seriously... all you really need is a .22lr.
Cause if a bear is going to attack you, you just need one .22lr round... to shoot your buddy in the leg with as you high tail it out of there. The bear will be more into your friend at that point.

Sorry, couldn't help myself...
I actually pack the hydra shocks.
Because of thier explosive bullet expansion, in a pinch I want that bear... or human... to have a piece of his ass gone if it actually comes down to game time.
Plus, the low recoil makes them super acurate comparitively.