This is a .30-06 Springfield standard barrel from a 1951 Winchester Model 70 rifle.
Bluing - 80%. The bluing is fading with worn spots.
Metal - Overall, this barrel is in very good condition with no deep scratches, dings, or other damage.
Bore - The barrel has no throat notable wear, and just a few scattered pits, rating a 9 out of 10. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE