Re: proven loads for a 28 inches "edge"....
My accuracy load for my 28" Edge is 89.5 grains of H1000 under the 300 SMK using the CCI 250 mag primer. A small extreme spread and excellent accuracy. It is slow for Edge standards (2725 FPS) but scary accurate and is flawless for day to day consistency. Depending on the lot of powder, it seems that 89-94 grains under the 300 SMK in the 338 Edge is one of the best rifle/load combos in the history of long range rifles. It is like shooting Federal gold medal match 168's in a 308. It works flawlessly from rifle to rifle as long as the rifle is put together even half way decent.
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.