Here's the update on my build. I got my rifle back a few weeks ago from TJ's. I originally had a stock Rem 700 Varmint 308. I bought all my parts and took it in to save time - a Krieger 6.5 mm blank, McMillian stock, Jewell trigger, Badger brake and recoil lug. They trued the action, lapped the lugs, reamed the chamber, fit the barrel, threaded for a brake, bed the action and duracoated barrel and action.
When I ladder tested my loads for the factory 308 at 100 yds I had very clear dispersion in the groups, 3/4" to 2.5", and a very clear direction on which way to proceed with my loads. When I ladder tested the new 260? I worked up from 5 separate powder volumes from 42 to 43 gr of H4350, under 142 smk's. All 5 grouped under 1", between 1" and little under 1/2". So, I settled toward the higher velocity. I got a nice day at BLGC (no wind) and when I did my part it group at 1 3/4" at 600 (witness by another member on this forum) - that is just under 1/3 MOA by my math.
Made my first trip to the Sporting Rifle Match this last weekend and had the opportunity to take a poke at 1700 yds (1680 to 1700 depending on who's range finder you want to believe). Took 5 shots to get the wind call right and rang the plate twice.
When I'm ready for another build or needing a new tube put on - their the only ones I'll go to. As you see above there are some excellent recommendations for gunsmiths - TJ's is definately one of them - Tim and Fritz do great work.