I don' t know what grain bullet you' re shooting but my guess would be 150-165grn range because thats what the majority shoot in the 30.06 and also velocity is going to play a role in sighting in too. Have you ever chronographed your load? I shoot a Hornady 130grn Spire point in my 30.06 and i' m sighted in as follows....+3" at 100yds, +1" at 200yds,0 at 250yds,-5-6" at 300yds.