I've heard mixed opinions about the amount of damage a bear can take from firearms. I personally don't plan on hunting bear, but think about this question in case I ever roam around country that contain bear, because like everyone else I've heard the horror stories about bears mangling people. So this is more of a question regarding self defense against bear. I've heard that bears can take any round/caliber from guns (handguns in particular). However, I've also heard that you can only defend yourself against a bear with a .50 caliber handgun or equivalent like that from a Magnum (revolver) (and that that is the minimum sized round you have to have for the bear). As I've heard, the bear will only stop it's violent rage and travel towards you if it's been damaged enough to a fatal extent. By the way, I'm aware that people tend to get fined for shooting bear, but if I'm in a situation one day, I may have to take the bear out to save my life.