I will let Jackie or one of the others from Texas answer the question about gunsmiths close by. You couldn't go wrong with Cecil, that's for sure. Also what might come into play is: what time frame are you looking for? Bruno's, Kelbly's and Hoehn's amoung others may have a barrel in stock which will speed the process up. If your willing to take time, then let the gunsmith you select (who may or may not be a dealer) order the barrel and chamber it up. Hope I didn't confuse you any.
Hovis