Wow, 40 years old is ridiculous!
I dont know i just don't like putting impregnated bullets down a perfectly good barrel. However much it takes to clean the throat up that way will take just as much out of the whole barrel which will open up bore and grooves.
Personally I'd set the barrel back with a GOOD reamer, but thats me or I'd tell the smith to make it right
I wanted to tell him to make it right, but I'm done doing business with him. After I got it back and bedded it into a new stock, I got compound into the action and chamber and needed help getting that fixed. The first guy said he'd get it done in a week and "take care of me" pricewise, but after hearing something similar multiple times, not having the work done for 7 months when it was supposed to be 3, doing stuff I didn't want him to do to the bolt and action and basically telling me the stuff I was concerned about didn't matter (very basic stuff like burrs on the crown) .... Not doing anything with that guy again. Anyway, I had another guy who has a good reputation fix the compound issue for me and he recrowned it. He said he thought there might not be enough barrel material left to set it back.
So.... We're working with this one.
There's my son story haha