I got the muzzle end of the bore polished. Found an excellent lapping compound that isn't too awful abrasive.
Its Kit Scratch Out. Comes in a yellow bottle. You can pick it up at Wally world in the automotive section.
The bore is shining like new now all the way through. Can't wait to get the trigger back from T/C so I can start shooting it.
Going to try PRBs first.