I am personally familiar with three Grizzly attacks. In only one attack did the victim have a chance to fire a rifle. In the other attacks they were close fast and unexpected. The rifle was lost in the first blows. In one instance another hunter shot the Grizz 5 times with a .270 at a very close range. In one attack the victim was able to fire 5 .44 Mag rounds into the bear while the victim was receiving a fatal "Hug". Handguns should be carried in a strong rig and snapped in across the chest. Handguns carried around the waist are hard to reach and may be lost as you are thrown around like a tennis ball.