This is a .30-06 Springfield standard barrel from a 1952 Winchester Model 70 rifle.
Bluing - 85%. The bluing has some worn spots and blotches, particularly around a lightly rusted/pitted spot near the muzzle.
Metal - This barrel is in good condition. There is the noted rusted/freckled spot near the muzzle. The rest of the metal is in very good condition.
Bore - 9/10 - The bore shows almost no wear and only a few very light pits. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE