I'd have to say, I'm not speaking from experience of extreme long range. I've been on ranges where a perceived light breeze has given bullet drift of 8 inches or more at 200 meters. Wind was gusting across the range further down! At extreme long range your trajectory might mean the bullet travels up through much stronger wind before dropping into the target!I've heard some experienced long-range target shooters suggest that this is where the wind matters most. I wonder whether they are right, though? It sounds rather counterintuitive to me!