Now, bear in mind (I know, it's a bad pun, but I couldn't myself!

) that I have no experience with bears as there are none in Iowa (that I know of), but it occurs to me that the "best" gun for bear defense is the biggest one you can comfortably carry all the time and still shoot accurately and quickly. I guess I could be wrong, but I didn't think that black bears were all that aggressive toward people, it's the brown, Kodiak and polar bears that you gotta worry about.
Mike