A guy I work with bought a new 700 LTR a few years ago never even shot the gun. Sent it to Hart had them rebarrel it to 308 straight taper. They opened his barrel channel up whole 9 yards. I have shot the gun, not very much though, but it shot good.
Yeah, there work is very good. My uncle built a 280 a few years back, on a Remington 721 action. Also, a McMillan stock. The workmanship is flawless, but the wait time was long. They are tough to beat.