Rare occurrence i would assume.
Of course, there may well be a law suit that occurred with this particular incident, hence the publication.
Quote:
|
Smith & Wesson Model 629 .44 Magnum with 6½ inch barrel that has been the victim of a rare phenomenon known as an integral detonation. An explosion that blows the gun apart, this would have occurred when the gun was initially fired
|
http://www.vincelewis.net/44magboom.html
A round contains a double charge?