I sure do... I shoot in mountainous terrain over a valley at 550-1000 yards at my regular spot. I have found that some of the more challenging days for shooting are when the winds are actually calmer. Winds in the 3-5mph range often tend to be variable at this location and full value, vacillating between 90 and 270 degrees. I believe it is a combination of wind and updrafts that plague this spot. This gets to be very challenging beyond 600 yards. The wind is not strong but will cause you to miss a 15in wide target if you are not very carefully paying attention to the mirage (the only reliable indicator I have found as you are shooting over a valley). Shot this last weekend and there were a number of times that the winds were going different directions at the same time at different distances. When we pulled up my buddy thought we were going to "tear it up" as the last time we shot the winds were gusting to 30mph. I told him that it is going to be harder than he thinks because I could feel the wind shifting direction 180 degrees while we were setting up targets. He then proceeded to miss the first four shots at 680 yards. These misses were only a few inches off target but misses all the same. I had a little better luck, but it wasn't my first time shooting in these seemingly "easy" conditions. Give me a 10-15mph wind any day! Anyone else had a similar experience?