I saw a smallish brown bear shot in the chest at a quartering angle with that 300gr barnes out of a .458 socom. The animal was pretty unimpressed. The onset of darkness finally made us give up a spotty blood trail for the night. The next morning you could see where the bear had turned, flanked his trail, and laid in wait about 30 yards from where we gave up the night before. Thankfully in the night he must have grown bored. There was no more sign of him after that.
I think that between the angle the bear was at, and the likely limited penetration of a low S.D. bullet, that only one lung was holed.
