Elsewhere on this board I found at least one other message about a Norinco Dragunov which blew out the back of the case and ruined the bolt and cover. The same thing happened to me and I notice that there is a small semi-circular cut out at the bottom back of the chamber which correlates to the hole in the case that blew out. Is this semi-circular cut out a flaw or designed that way? Anybody know where I can get parts? Is surplus military Yellow tip or Silver Tip ammo ok to shoot in the Dragunov? Help!