Max ord is from the barrel heightMaybe bad question, and you may have covered it in you class (which my son and I have taken). If you are shooting at a downhill target, and say you are 20-30 feet above the target, and the Eagle Ballistic program shows max ord of 9 feet, should you measure wind at your shooting height or 9 feet above your shooting height?
Maybe just pray for mirage and let it tell you the wind.