I just purchased a remington 5r, I'm purchasing a Vortex viper 6-24 pst with moa\moa. I plan on zeroing it at 200. What adjustments would I need for 3-1000 yards as far as MOA adjustments on the scope. I plan on shooting Federal 168 smk bullets. I have a 20 moa base on the rifle, so I will have enough internal adjustments on the scope. I realize it may not be exact, but just something close would help. Thanks