Im looking at barrel replacement costs now.
Some backstory. When i first got the gun, i ran a cloth through the barrell to get any dust or dirt out, but i didnt use a copper bore guide cleaner. I shot the gun, WITHOUT a scope on it and i was hitting 3-5 moa at 100 yards with the factory sites.
SO, i get it home and i clean the gun. I use the copper bore cleaner and put some Krohl in there. Let it soak, cleaned it out. Thats when i saw all the rust and what not. I then added a scope to it. Took it to the range, and i couldnt seem to stay within 1 foot. I would shoot it once, then the second shot would be 12"s left or 12"s right. It was just sparatic. Scope appears to be tite, but its one of those mounts that clamp around the barrel.
Scope? Im going to take it out again and see what i can do. Im shooting Yugo ammo.