I was going thru a pistol class and the shooter next to me had a springfield XD. During the class he had a stove pipe on ejection, he went thru the clearing drill and when he swept the slide back, he managed to catch the spent case between the face of the slide and the new round being loaded, when the slide slammed forward, it went off, he had good muzzle control as it was pointed downrange, so no damage or injuries other than his shorts.