I've seen one blown Ruger 9mm, and it wasn't really blown.
The barrel split at the chamber, apparently due to a flaw in the metal. It was a rental gun at the range where I worked, and had seen a lot of use.
Guy brought it off the range one day, jammed all to hell. The barrel had split by the locking lugs, and put everything just enough out of dimension to jam things.
No shooter injury, no nothing like that.