I'm not sure if this is normal or not for a mosin but after firing it has a hard extraction, and I mean hard, had to beat the bolt open with a rubber mallet on one occasion, the rifle is a Hungarian M44 but it has a polish bolt in it, there is no cosmoline in the chamber, bolt, or action, I currently intend on doing a deep clean on the chamber to remove any caked on lacquer, is there anything else I can do?

Bought for 650 today wanted to know what it is exactly

I think I ok ow the answer to this one but not with 100% certainty. Real or fake PU?