This is a .338 Winchester Magnum barrel from a Model 70 rifle, produced between 1959 and 1963.
Bluing - 85% - The bluing is dark but with numerous worn spots along the length of the barrel.
Metal - Overall this barrel is in very good condition with a few light scratches. There are no deep dings or other significant marks of metal damage.
Bore - 8/10 - The bore has light wear in the throat and some scattered light pitting in the bore. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE