This is a .220 Swift standard barrel, manufactured in 1955. The barrel is made of stainless steel.
Finish - 90% - The finish has a few spots with wear, most notably a small rub on the top, midway down the barrel. There is also wear at the muzzle and along the stock line. There is a small patch of freckling behind the rear sight dovetail.
Metal - Overall, this barrel is in excellent condition. There are no major scratches, nicks, or other metal damage.
Bore - 9/10 - The bore shows almost no signs of wear and no pitting. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE