M 190 Bolt not closing

[maydog]

I have an older M190 that the bolt will close and rotate fine without a shell in the chamber but will not rotate with a shell unless I force it with my hand.

I stripped it down reassembled and it is still doing it.

[Benelligunny]

1. Check the extractor cut on the barrel for any burrs/gouges, carefully remove them with a small file if necessary.

2. Check extractor for wear or roughness. Replace if necessary.

3. Oil the recoil assembly, bolt and bolt rails. Try these first then get back to me if this doesn't work.

[truckcop]

Quick note: you are letting the bolt go forward under it's own power rather than riding it forward with your hand, right?