There was a fire near hear that burned the place to the ground. The local FD was amazed, and impressed with the guys ammo storage... 500 rounds in a metal ammo box. Light weight metal. Every round was ignited, and every bullet of .223 was still in their casings. The casings, were all blown out the side.
The reason I tell this story? The likelihood of a round shooting it's bullet with it's casing not housed in some type of chamber is very, VERY slim... Guy is makin somethin out of nothin IMHO...