I don't want to shoot any bear with a pistol. But if I have to I will. That's why I carry the Raging Bull in .454. You can't always avoid bears, they don't always run like they are supposed to,(guess someone forgot to tell all of them).
Have seen many instances where guys were charged without warning. Like the guy down near Healey, he walked over to a slope and sat down to glass an area. He was only a few yards from the truck and his rifle. As he turned and looked through the binoculers all he saw was brown hair. He pulled his .357. Can't remember if he was able to get a shot off before the bear hit him or not. But he did shoot the bear as it was mauling him. Finally the bear started walking away, then turned and was coming for him again. The guy cocked the pistol pointed the gun and held it at arms lenght. Litterally shoving the gun into the bears mouth, then firing. The bear stopped, shook it's head, then left, never to be seen again. Meantime his partners on the other side of the truck never heard the shooting.
Been charged a few times, had to kill two bears, don't ever want to have to do that again under those circumstances. But I will if I have to. And yes I often hunt with a Contender. Don't see any differance shooting it as shooting my Handi rifle or TCR. Only got one shot with each.