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Missed that .
Interesting that the gunsmith says its not a issue .

From that rather grainy photo of the bolt was it an actual gas cut or a sooty ring that has not actually cut into the metal?

Replaced it from memory.

Steves are good to deal with. Far better then many I could mention .

I have had to deal with a similar case as this some time ago. Steves wholesale were great and had things sorted very fast .