Had one built a few years back, but haven't done serious load testing on her yet- got sidetracked you could say. Anyway for the specs: 29" Lilja 1 1/4 stainless barrel on a rem 700 action the 'smith trued. tightneck chamber(.268) i think . I bought several hundred norma 6.5 x 284 brass and necked them down trimmed the necks. I figured .0015 -.002 difference between loaded round and actual chamber dimensions. The throat is not so deep I can't reach the rifling ( had to have it rechamberd). The barrel is a 1:8 and I'm shooting Sierra moly 107 MK's. The only powder I've used so far has been rl 22. I fellow from Montana that goes by Fiftydriver has helped me realize what I'm looking for. 1/2 moa out to 500 yards. Any further help would be appreciated. Oh, she's scoped w/ a 12-42 Nightforce Benchrest model