One of the most important things I learned in Shawn Carlock's Defensive Edge Long Range Shooting Class
last summer was how to identify updrafts that can affect your vertical POI.
I still have this image in my head of a Christmas tree with arms, and the arms are slowly waving up and down, up and down. You see, a tree sways side to side when there is a cross wind. The same tree sways up and down when there is an updraft. Quantifying the change in POI is really tough, though. Now that I understand the basics of updrafts, I'd have to spend a LOT of time out west in canyons to really learn how to do that.
Hey, that sounds like another great excuse for another trip out west. Yippee!
I'll be publishing a review of his class next month. When you consider how much time, effort and $ we all spend on this terribly addicting sport called Long Range Hunting -- you owe it to yourself to take a long range shooting/hunting class to make yourself able to reach the next level in your abilities.
That would be a great Christmas present to yourself.