This is a .270 Win. standard barrel from a 1953 Model 70 rifle.
Bluing and Metal - The bluing on this barrel is generally dark but it has some freckling/shallow pits and several larger rubbed/worn areas. There are no deep dings or gouges.
Bore - 7/10 - The bore has some throat wear and heat cracking, along with a few scattered pits. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE