This is a .243 Winchester varmint barrel. The barrel is 26" in length and considered one of Winchester's medium-heavy barrels.
Bluing - 85% - The bluing on this barrel is significantly worn. There is freckling in the bluing throughout the barrel, as seen in the listing photos. The remaining bluing has a nice matte finish and is consistent throughout the barrel.
Metal - Overall, this barrel is in excellent condition. The bluing damage does not reflect any substantial damage to the metal, and besides a few very minor scratches, there are no significant nicks, scratches, or other forms of metal damage.
Bore - 8/10 - The bore shows very few signs of wear. The rifling is still clearly defined and consistent throughout the bore, and there are no visible scratches or spots of pitting. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE