I have read several times of barrels with "Frosting" and "Darkening". I am also told one of my rifles has a "slightly worn throat".
I have learned a bit about chambers(ringed, rusted, pitted and welded) but haven't a clue about the throat, the rifling and muzzle except for worn edges on the lands and missing chunks.
What are frosting, darkening and worn thoat and are they a problem when buying a rifle?.
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