My Brother in law was in basic around '60 and trained on the Garandicon. One of the recruits had a failure to fire or extract situation. The D.I. put the rifle down butt first on the ground and used his foot to open the action. His boot slipped off the slide handle, making the rifle lean toward him and the weapon fired killing him instantly, then the rifle doubled and the other shot hit and killed the recruit he was helping. Proving that just about anything can happen. Some of those old WW2 and Korean war DI's were still crazy as a March Hair 20 years later.