Personally distance doesn't matter to me. If the guy is a reputable gunsmith, and can do the work I'd send it to anywhere in America. I wouldn't send gunsmith work out side the US, as we have excepting in rare occasions concerning a double rifle or drilling great guys that do great work.
If I didn't live near a gunsmith I liked, I'd be willing to ship my box of parts to him and ask for what I wanted.
You won't save time or money dropping it by a douche bag local, when you can have one of the best accuracy gun smiths in America work on it.