Bear talk is not on the agenda
Defense against bears is way off-thread.
But just for clarity
Bears are mammals of the family Ursidae.
Black bears are species Ursus Americanus and found almost everywhere.
Brown bears are species Ursus Arctos and found across Eurasia and North America
Subspecies of the Brown Bear
Ursus Arctos horribilis
also known as the silvertip bear, the grizzly, or the North American brown bear. Commonly found in the Alaskan interior and across Canada and the U.S.
Ursus Arctos middendorffi), also known as the Kodiak brown bear or the Alaskan grizzly bear or American brown bear and Coastal Brown Bears. These are the big ones. Largely because they are so well fed on salmon. Interior bears have to work harder for their protein.
They are ALL very hard to stop with any handgun. 12 gauge with Brennekke slugs or 300 Winchester Magnum is considered to be minimal. But remember, STOPPING one who has decided to hurt you is a far different task than HUNTING one.
Now, back to the original thread.