I recently bought a Nikon Omega scope that is supposed to be regulated for a blackpowder rifle with a specific load. I put this scope on a Remington 700 in 30.06. I figure if the bullet drop is good to 250 yards in .50 cal BP, it should be good out to 600-700 yards in 30.06. If anyone has tried this please let me know, I don't have any place to zero a rifle to test this theory.