This is a .30-06 standard barrel from a 1945 Model 70 rifle.
Bluing - 95% - This barrel shows almost no wear.
Metal - Overall, this barrel is in excellent condition, with no notable scratches, dings, or other damage.
Bore - 9/10 - With almost no throat wear and no notable pitting, the bore rates a 9 out of 10 under borescope examination.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE