@Farmer B your.308 will do just fine tho, maybe find some ammo with a little heavier bullet, or get a box handloaded if your worried about it. Aim half way up the bear and a couple inches back from the shoulder and he won't go far. They bleed like a stuck pig if you hit them right. Also, if you are hunting over bait, and it's right up close, i like open sights, or at least make sure your scope is turned way down. Open sights are also nice for tracking in brush.