Why not go with the old 6.5-06. Already got all the brass you need, just neck up the 25-06 stuff and you know its going to feed relaibly. The 6.5-06 is the ballistic twin of the 6.5-284 while being just a touch more efficient. I just built one for a friend of mine with a sporter contour Shaw barrel and its running 48.5 grains of H4350 pushing a 140 grain Berger at 2950 fps into 1" groups at 200 yards.