This is a .30-06 Springfield standard barrel from a 1952 Model 70 rifle.
Bluing - 90% - This barrel has light finish wear at the muzzle, from the rear leaf sight, and on the front sight ramp.
Metal - Overall, the metal is in excellent condition. There are no deep pits, gouges, or scratches.
Bore - 8/10 - The bore has almost no throat wear but it does have enough shallow pitting to rate an 8 out of 10. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE