My father-in-law had a CVA back in the mid ' 90s that almost cost his an eye due to a blown nipple. For some reason, (from what I can recollect), he thought the nipple had come cross-threaded and never would seat well. Well, when he went to shoot, the nipple blew and ran right down his hand b/t his thumb and pointer finger....It cost him some stitches and luckily has was wearing eye glasses. Scary stuff!