Briley is certainly one of the foremost shotgun gunsmiths anywhere, inthe opinions of some. But they charge like it too.
I use Clint Brown at Cypress Gunworks and he has a shop on his place in Cypress. He's a mom-n-pop shop but he does good and, more importantly to me, honest work. In fact, the first thing he did for me was remove a broke screw in my 700 and re-threaded the hole just in case. Once again, first time customer and he didn't charge. He said he'd prefer i bring him "real work" before he charges me.
Been going to him since.
On top of all that, he has a jack arse you can go hang out with. Literally, he has a donkey on his property.
PM me if you'd like his contact info.