Has anyone experienced an issue with these (or other Mosin-Nagants) where the bolt fits too tightly into the receiver?  As soon as the lugs start contacting the inside of the receiver as the bolt is pushed forward there is a lot of resistance and I can see where there is wear on the bolt lugs.  Once all the way in, the bolt takes some force to pull back out.  The issue is exacerbated when there is a cartridge chambered (and the bolt also becomes difficult to turn).  It is rather different from the sticky bolt problems I had when I first got my M44 (which I was able to cure).  I don't recall this happening when I first got it and was cycling the bolt but I could be remembering incorrectly.  Took it shooting and it got sticky after firing the first round.

Well I don't have experience with that but I would suggest a big brush, lots of solvent and a good scrubbing of the lock lug area in the receiver.  You may just have some shellaced oil solids in there.  Hopefully that's all.  I would take the action out of the stock with the stronger solvents.

Anyways i'd try that before picking up a new bolt.

make sure there is no gunk in the extractor cut out of the barrel.

You might also want to remove and  clean the interrupter. It worked for my M39.

These suggestions are where I'd start.  They're the most likely culprits.

Did the first.  I'll have to try the second.  I just found it odd that this started only after firing my first shot out of it.

Yup, mine did that too. Luckily the interrupter cleanup is easy to try.