I recall 4-5 years ago one of the ammunition manufacturers had a Swede M96 blow up in the test laboratory. I think(?) it was due to the bullet moving forward and stopping its progress in the throat area. The receiver could not hold it and blew. Not common, to say the least. A man whom I respect once told me Swedes are very easy to drill and tap. He always said they were soft steel, but I would expect stretching and not blow-ups. Very interesting photos. Thank you.