If you want to stop them right there shoot them through the front shoulder . 1 broad side lung shot is all it takes to kill them often the guys that keep shooting till they fall wind up pushing them in to running with the back ups. Give him one shot in the lung and more than likely he'll stand there wondering what bit him and then just dump over.
I have found this to be true. Last years, for example, took one through both lungs and and ran into some bush. I sat down, had a cup of coffee and after about 10 minutes found him, dead, about 20 feet into the little grove of Spruce he had ran into.
