One Hand, 7 Pews, 6-Pack Intact: The Convenience Store Hero!

A customer in a convenience store preparing to purchase a 6-pack of beer happened to observe the store clerk suddenly become the victim of an armed robbery. With little hesitation, the customer drew a pistol, and shot at the robber 7 times--including shooting him once in the face--all without ever putting down his six pack. The final shot was fired after the robber had fallen to the floor. Fortunately, we have the surveillance video! Lawful self-defense? Lawful defense of others? Lawful force...