Re: Updraft question ?
Posted that before my coffee this morning, and worked off dial up and not wind. My revised # is take .60 MOA off dial up. If I am understanding the scenario, you have 500 yards with a 4mph updraft, so at 500 yards w/10mph wind is 1.5 MOA @ 2800 FPS. 1.5 x .4(4mph wind)= .60 MOA.
Take that amount off your dial up.