This is a .270 Winchester sporter barrel manufactured in 1951.
Bluing - 95% - This barrel shows minimal bluing loss, with no significant fading or wear of the bluing.
Metal - This barrel is in very good overall condition. There are some significant scratches near the muzzle of the barrel, but no significant nicks or other forms of metal damage.
Bore - 7/10 - The borescope reveals some signs of rifling wear, but no pitting or significant bore damage.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE