This is a .300 H&H Magnum standard contour barrel from a 1940 Model 70 rifle.
Bluing - The barrel has been re-blued in our shop; the new bluing is without wear or blemishes.
Metal Condition - There are a few sanding marks on the rear sight boss and, under very close examination, some very small dings and specks of freckling can be seen through the bluing.
Bore - 8/10 - The bore has light throat wear and some scattered pits. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE