This is an undated .270 Winchester standard barrel from a Model 70 rifle.
Bluing - 95% - The bluing on this barrel is generally dark but has wear at the muzzle and a small worn spot on the shank at the stock line and on the bottom of the barrel just behind the front sight.
Metal - Overall, this barrel is in very good condition with a few light scratches and freckling. There is no other significant metal damage.
Bore - 9/10 - The bore shows almost no wear in the throat and no notable pitting. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE