navdocret, Many Feathers and jpickar, give some good advice. Use a max load with a hard cast bullet in the 285-325 gr. range, or a jacketed soft point or non expanding bullet like a Speer Silhouette TMJ. Penetration to the brain or spine is the key here. Before you ever consider talking a shot at a bear though, try to exhaust all other options. Stand your ground ( don't ever run!), yell, use bear spray, then shoot only if that is the last resort. All this will happen very quickly. Surprising a grizzly at close range, ( or with cubs) will be the only reason a bear will charge you, and even then it will most likely be a false charge. If you hit the bear and the bullet doesn't penetrate into the skull and hit the brain, or a spine shot, the bear will want to chomp and bat you around with 3 inch claws, even if he had no desire to do so before you shot at him. A grizzly shot in the heart or lungs is going to live long enough to make you regret you shot him. Adding in the factors of stress, excitement and the bear bounding at you ( no a bear isn't gonna be walking at you on his hind feet like in the movies), and it is way more likely that you will hit him in the jaw or ear and just piss him off. You'd only have time for one shot, if that, so it better be a good one. A big bore handgun will give you some piece of mind, but hope you never have to use it, it probably won't turn out good in you favor. Just enjoy your fishing, and be aware, if you are approaching some brush you can't see around, make some noise, so you don't startle a bear. I have been close to 15 grizzlies in 35 years of hunting, hiking and camping in grizzly country around Yellowstone and in Alaska, and have only had one bear charge me. It stopped the charge at about 20 yards away, probably due more to the fact that I stood my ground than the fact that I had my S&W 629 pointed at him. Bears outside the Natl. Parks aren't quite so bold and have more fear of man.