Au, I laughed because we have large black bears in our area and I have more respect for them than to use a small caliber and light bullet. Shooting a bear in a tree and one from a blind are two different ball games.
The problem as I see it with questions like your is this: Fred(45) down the street goes bear hunting with his buddies. Once the dogs have the bear in the tree, Fred climbs up the tree and shoots the bear with a 22Mag. Bear falls to the ground dead as a door nail. Jimmy(13), who lives a couple of blocks up the street hears the story, all but the part about Fred climbing the tree. Jimmy has a 22mag and would love to kill a bear. Jimmy gets up saturday to hunt fox, he calls in a black bear and shoots him with a 22mag. The problem is, said bear came in hungry, got beaned in the head with a 40gr 22mag bullet, and Jimmy is the first thing he sees to take his frusrations out on.
If you think this is far fetched, don't, some thing very similar happened when I was a kid. The difference is Jimmy lived and learned from his mistake. The next Jimmy may not be so lucky!
Alot of kids and people that just don't know any better read the posts to learn from others experiences before they go out and try it. Your question may be harmless, but someones answer may not be!
Qaz