[Mosin-Marauder]

Did as you said and tried to chamber some spent casings. They had some difficulty feeding, the bolt would remove it from the magazine but about halfway to the chamber it would get caught or something. It would sometimes turn sideways. Same result chambering, the bolt would move up to the receiver and when I try to cam it it gets hard to close and the second stop before it closes it males this small *pop* before the bolt would chamber it (I heard these chambering live rounds aswell). Ejection was fine. I'll try the brake cleaner and pipe cleaners when I get some. That's about it. Also, here's a picture big the receiver if that's any help.