Originally Posted by RobF
Struggle... but i tend to take quite a few stabs and then go in the middle.. and if i can i try and get it mid shimmer..
What, even with the March?
The perceived change was about 5yds between shimmer and non-shimmer. Since the air temperature stayed pretty much the same (or at least felt that way) it beggars if heat shimmer is responsible for frequent mis-ranging. Did youtr experiments cover heat shimmer, Rob?