This is a standard barrel from a .300 H&H Magnum Winchester Model 70 rifle.
Bluing - 95% - The bluing on this barrel shows some light spots of wear.
Metal - Overall, this barrel is in excellent condition. There are some light scratches on the barrel surface, but no other notable spots of metal damage.
Bore - 8/10 - The bore shows some minor signs of wear. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE