Going "up there," barometric pressure, temp, and humidity will probably vary significantly from your locale. This [/b]will[b] affect POI in different directions but don't get too deep in the weeds on this. Assuming you have a 200-yard zero now, recheck and confirm when you get to your hunting area and you should be good to 400 within a couple inches at those altitudes.
Assuming you are deer/elk hunting, you have a ten to fifteen inch target respectively.
Last edited by George_De_Vries_3rd; 08/24/15.
