This is a .30-06 Springfield standard barrel from a standard 1951 Model 70 rifle.
Bluing - 95% - This barrel shows minimal signs of bluing wear.
Metal - Overall, this barrel is in excellent condition. There are a few very minor scratches and nicks in the barrel, but no other significant marks of metal damage.
Bore - 7/10 - The bore shows some signs of wear. The rifling is bright and smooth throughout the length of the barrel, but there are multiple spots of light pitting in the bore metal. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE