This discussion brings to mind a copied article I read during Rangemaster School in 1983. I can't recall the source of the text, but do recall the gist of the content. A S&W Model 14 revolver--part of a U.S, Navy ship's on-board small arms allotment--apparently got a bad round's bullet stuffed deeply enough into the barrel to allow subsequent fired rounds to "stack up" in the barrel. In an aggravated case of Being Oblivious, the shooter only became aware of "a problem" after bullets began dropping on the ground in front of this shooter--from the revolver's muzzle! The article showed an X-ray of the stuffed barrel with the conga-line of bullets extending from the barrel's forcing cone to its muzzle. Armorer intervention enabled removal of the bullets, and the article text stated that the revolver was "undamaged". Maybe so, but I'm equally certain that the interlude dd the mechanism no intrinsic benefit, either.