M16, see my post on the "10mm/.41Mag" thread, re killing a bear with a handgun.
About a person being charged by a bear, in my post on the same thread, one of the professional guides claimed he killed a bear with a .41 Mag. S&W 57, that was chewing on him, several years before I booked my hunt with him and his partner.
It's a long buildup to how he got in trouble, but he said that as the bear had him down, the only thing he could remember was that .41 going "click, click, click" as he'd emptied the gun into the bear.
Of course, I did not see the attack, so it's anecdotal, but I DID SEE the backs of his upper arms, which had huge scars on them which looked as if some giant holding hay hooks had gouged very ugly, deep wounds in his arms. I can't imagine how he could have got those scars, except from a bear attack.
Years ago, an older friend of mine, now deceased, lived in the boonies in Alaska for ten years. He told me that one morning, he went outside his cabin to get some firewood. As he approached the stack, a small grizzly stepped around the stack and charged him. He always wore a Colt Govt. 45ACP. He pulled it and started shooting. He said the bear finally fell dead at his feet as he emptied the pistol.
Again, anecdotal, but he had some Kodak shots of a dead grizzly, with a stack of firewood in the background, and he's holding a Colt .45 ACP in his hand by the bear. I asked him why he carried the .45 auto and he said, "Because that's all I had."
He had been a paratrooper with the 101 Airborne Div., and had jumped at Normandy. He was as salty as they come, and I believed him. FWIW. J.B.