I have hunted Wyoming and Utah over the years for antelope, mule deer and Elk. I always carry a large bore revolver in a handy holster. Years ago, before one could legally carry in Yellowstone, my sons and I manage to get between a sow black bear and her cubs. It was a close call but we remained calm and she only offered a couple bluff charges until she retreated. I have had close encounters with a couple grizzlys in Wyoming up around the park. Be mindful of possibilities and make plenty of noise while hiking if possible. I have a friend who had to kill a grizzly up in Alaska a few years ago. He was salmon fishing and a young male charged him several times in bluff charges before he came in for the attack. He had to fire three times to stop the charge. The bear died about 6 feet from him. His gun of choice was a short barreled 12 gauge pump with slugs. He was delayed a couple days waiting on the fish and game department to investigate and clear him of any charges. Luckily he had a couple witnesses. Many years ago, I purchased a 454 Casull revolver for carry in bear country. The guy I purchased the gun from was a landowner up in bear country in Montana. After a close call with a grizzly, he sold me the gun so he could purchase a bigger gun. Beautiful country! Enjoy and be safe!