This is a .264 Win Mag standard barrel from a Winchester Model 70 rifle. There is no date marking; later barrels were not date-stamped.
Bluing and Metal - 95% - The bluing is in excellent condition; the most notable wear is right at the muzzle and there are no dings or other damage.
Bore - 9/10 - This barrel has an excellent bore with almost no throat wear and no other damage or pitting. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE
