This is so odd that I am not sure it should count, but:
I took an inexperienced friend to a range, and my Beretta 92 locked up on him to the extent that it took a fair amount of force (a couple of solid whacks to the grip with the palm of the hand) to move the slide. It turns out that some ammo, which he had loaded without looking at it, had badly mashed case rims. One of these failed to extract and a second fed on top of it.
The ammo caused it, but it was in a pistol, and it is fair to say that a revolver would have rotated the cylinder and fired the next round.