This is a hard to find .243 standard barrel (much less common than the .243 Featherweight barrels) that has notable damage in the last 1/4" of the bore. It appears a combination of cleaning rod damage (always push the rod in through the breech, not the muzzle!) and rust has created the damage. Perhaps cutting 1/4" and re-crowning could save it. Or maybe you aren't concerned about fine accuracy. The is almost no wear in the throat but some heat cracking in the first few inches of the barrel. There is also another patch of pitting about mid-way in the barrel.
Bluing - 90% - The bluing is about 90% or better, with a small worn spot at the muzzle.
Metal - The metal is in very good to excellent condition a very small patch of surface freckling but no other notable damage.
We use the NRA Modern Gun Condition Standards Grading System for grading part conditions. You can read about it HERE
