This is a .30-06 aftermarket 24"barrel. It is not a Winchester contour and will not fit a Pre-64 stock without modification to the stock. It has holes for adding a front sight ramp but no provision for a rear sight (use it with a receiver sight as is or modify it to add the rear sight to the barrel). The barrel is not marked with the chambering.
Bluing - 90% - The bluing is about 90%, with a small worn spot from the stock.
Metal - There are a few light scratches but no significant marks of metal damage.
Bore - 7/10 - There is almost no wear in the throat, but some shallow pitting in the bore. The rifling is still bright and smooth. Borescope verified.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE