Quote:
In your case, I'm going to advise STRONGLY against letting a Dremel anywhere near your bolt.
If you remove too much material in the wrong places, you can adversely affect headspacing.
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You could grind away on the camming surfaces of the cocking piece and the bolt body to your heart's content with no effect on headspace. The only way to affect headspace is messing with the back side of the locking lugs on the bolthead. The bolthead "floats" just like a Savage and is independent of the rest of the bolt assembly.
There's not many things that can cause your symptoms. If, indeed, the bolt is harder to close when chambering a round, and it's NOT the bolt, or residue in the chamber or locking lug recesses, it has to be an issue with the chamber itself.
Try feeding
empty brass.... this will rule out any issues with the timing of the extractor groove, boltface, etc. If the bolt closes without extra resistance on empty brass- that would only leave an issue with the leade/chamber IMO.