If he didn't measure BWT or use a borescope, his free opinion is worth what you paid him.
There are still a great many guns floating around with barrels made from very weak steel, Also, their barrel hooks are soft as butter.
Earlier today, someone wrote that their smith had backbored their barrels without their asking. That is BS of the higher order. He'd be buying that gun from me.
Any smith that just eyeballs a shotgun and renders an opinion is lazy, and a fool with his insurance company's money.
I cannot trust my eyes or hands to someone's eyeballing of a shotgun's barrels.
If they cannot afford the tools, or the training to use them, go somewhere's else.
