I've heard all kinds of different things on how to aim a handgun. I'm right handed, and have always focused on aiming with my right eye and gun sights. I have an army buddy that swears by aiming with his off eye(he is R handed and aims with his left eye), which just doesn't feel right to me. Recently, I have been trying to use both. Focusing on the target with my left eye while keeping the gun sights superimposed over the target with my right. Not sure if its worth messing with, but I just started trying it out and it seems to work pretty well