If I was in your shoes I would look at the gun photos and pick one you like. Most guarntee a 1/2moa but in my experience with a little load development they will do at least that(my rifles shoot far better than I can). 308Nate is my smith, a good friend and lives 35miles from me. You won't be disappionted in any of the well known sponsored gunsmiths here. Separating a good gunsmith from a great one in my opinion is easy. The great one is the one who is willing to share his/her knowledge with the rest of us to help people gain knowledge and experience=confidence in ones shooting. Some do it by educating on this forum and some do it face to face. I wasn't a long range shooter until I met Nate. He introduced me to LRH and this site. You won't be disappointed in any of the sponsored gunsmiths. Give them a call and find one that fits.
Just to name a few
"Amazing things can happen when preparation meet opportunity" Richard Schatz
"The will to win, compares little with the will to prepare to win" Donovan Moran