This is a .375 H&H magnum barrel from a 1952 Model 70 rifle.
Bluing - 90% - This barrel has a beautiful, deep original finish. There are worn spots on the bottom of the barrel (hidden by the stock), and at the muzzle.
Metal - Overall, this barrel is in very good condition. There are no significant marks of metal damage.
Bore - 8/10 - Very good condition. The bore has almost no wear in the throat and the rifling is bright and smooth, but there is some pitting, especially near the muzzle. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE