Thanks for offering your experience. Fortunately for me I have experience with them on 2 builds already and am 100% pleased. I wonder if the guy that sent you the rifle actually had them do a full build. They do barrel jobs for people without mounting it to the stock, but they don't like doing that, and probably for the reason you mentioned. Just one thought. Or if you said you found the chamber cut .006" off axis there'd be no arguing that Regardless, they are local to me and I have only good things to say.
It seems you have a bunch of 2X nosler builds under your belt that people are happy with. I would have had no problem using you. But Like I said, these guys are local to me and have done great work for me in the past.