My preference runs to Speer 240gr JHP. Max loads out of a 20" barel give good tragectory and energy out to 150 yards, and it lacks for nothing as far as penetration.
I've never seen a broadside or front quarter shot stop in a Whitetail deer. The only slug I've ever recovered from a deer was a head on shot that stopped in the steak section.
I wouldn't think twice about using the 240's on black bear up to 500lbs.
Tom