Yep that's all I could think of too was that sweet revolver clattering across the concrete floor. If Carl had shot the guy and he was holding the shotgun by the barrel or something it would've been a problem but I think he still had his hand in the trigger guard and was slowly swinging the barrel towards Carl Id have shot the guy too. Hershel should Have manned up and shot for him. That way Carl wouldn't have to deal with killing the kid.