A friend worked for the Forest service years ago, crawling around in the Alaska brush where the Brown Bears would leave half a salmon with the blood still squirting out and my friend having no idea where the bear was. They were required to carry 375 H&H Magnums suspended at waist level. Qualification was hitting a pie plate at 15 feet while shooting from the hip.
greater yellowstone griz are significantly smaller than Alaskan brown due to diet.