I wouldn't fire lap it. I would clean it with a fine rouge paste and stroke the bore 30-40 times. That will keep your throat from eroding. Rifling is important, no doubt, but the best rifling won't help accuracy with a bad throat.
The best I can tell is that the bore is fine. Tough to tell on the throat. I just installed a Mike Bellm spring kit. Dropped the trigger pull from 2.75 lbs to 1.75 lbs. After a retest I'll make further adjustments. She's shooting pretty good right now. Around 1"@ 100 yards.
I am the way, the truth, and the life: no one comes to the Father but by me. John 14:6