Originally Posted by MTBULLET
use a bore scope.
Better yet. Shoot the rifle.
Bottom line is caveat emptor.
People sell guns for all kinds of reasons.
Some are unsafe or poor shooters. Many are simply safe queens that never saw much use.
If the rifle (especially the bolt) shows a lot of wear, then it's been used a good bit. But if it was taken care of, it could still be better than a rifle that's either not seen much wear, or been re-finished to look new on the outside.
If the rifle shows external signs of abuse, then I figure the guy didn't take care of the inside either. In which case, I would assume it's going to need a rebarrel.