This is a .30-06 standard barrel from a 1939 Model 70 rifle.
Bluing - 80% - This barrel shows bluing wear in patches on along barrel, on the front sight ramp, at the muzzle, and has several spots of bluing loss on the bottom side of the barrel (hidden by the stock).
Metal - Overall, this barrel is in excellent condition. There are a few minor marks of wear.
Bore - 6/10 - The rifling shows minimal wear, but notable pitting throughout the length of the bore. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE