I have a problem with my Mosin. When I first bought it I had shot 12 rounds with no problem. The next time I shot it I loaded one round and it shot just fine but when I tried to eject the shell the bolt was locked up. With some help from a hammer I unjammed it. So I took it home and cleaned it thinking maybe I didn't clean it well enough after the last time I shot it, even though I clean all my guns thoroughly after shooting. The next day I take it out again. I try to load a round and as it's almost all the way in the chamber it stops. It's like it had swollen shut a tad bit. I've oiled it time and time again but still yet nothing. My uncle told me he had the same issue with one of his rifles. It was a 223. He used the cheap Russian ammo like I did. He told me that the cheap Russian ammunition is coated with water resistant laminate. So when the shell heats up the water proof crap gets sticky and if you don't eject the shell fast enough the stuff will stick to the chamber. He said they're made mainly for semi autos. He just started shooting brass cased rounds after that and it wouldn't jam anymore. I haven't done anything with it yet. I was wondering if any of you have had this issue and if it can be fixed. Any info helps.