Krieger, Hart, Lilja, Rock, Brux, Centermark, and several others whose names are not on the tip of my tongue tonight, all turn out great barrels. Some have a preference for cut rifled over button. Others favor a 5C or canted rifling over the standard. Most of the time it comes down to personal preference. Obviously, the 338 Edge and Shawn Carlock will forever be intertwined. He can build you a great rifle, as can most of the other gunsmiths on this site. It may just come down to who can offer the best turnaround time and price. There is often significant lead time required on barrels and stocks, so focus on those first.