someone needs to teach burns how to hold a weapon

Who taught Ed Burns how to hold a weapon? This is the second movie I've seen where he holds up a rifle and fires without looking down the sight. If he is seen from his right and shooting right-handed, you shouldn't be able to see much of his face. I just don't get it -- we're supposed to suspend our disbelief, but it's really hard when the hero is holding a weapon incorrectly.