BM59 Problem

[Larryjk]

If you have had experience with the BM59 please send me information. I got one in and owner said the shells were sticking in the chamber. I couldn't see any marks with a little mirror, but decided I needed to go further. I took the gun apaart and pulled the barrel. Still didn't see any marks in the chamber but put it in the lathe and brought the chamber to a shine. Put it together for testing.
Took it to the range and used Federal 150 grain factory loads. Yup, they do stay in the chamber and the bolt is locked up tight. Had to push the handle against the edge of the bench to open the action. Not a mark on the empty brass.
Is the locking system the problem or is the problem enough pressure in the case that the system won't let it unlock? There is only about 12 inches between the front of the case and the gas port in the barrel. Is it possible that the pressure in the case is too high to let it open? I don't think so and suspect the left side lock on the bolt may be the problem. Any players have an idea. Send to larryjk@tribcsp.com