I went hunting on the weekend, saw 7 chamois but all does and young ones so nothing shot. I ended up taking a shot at a rock at 615 yards. We were at the head of a large valley shooting from one side to the other. The saddle was to our left and the main valley to our right. 10 mph wind right to left. Came up 10 MOA and right 2 MOA (should have dialed 3 MOA). Took the shot and hit approx 2 MOA high and 1 MOA left. I couldn't work out why I was so high. About half an hour later I remembered I should have allowed for a vertical component from the wind. The slope leading up to the saddle was aprox 26 degrees. This would have given just under 0.5 wind strength which would have lifted the bullet 1.5 MOA which would have accounted for most of the high shot. Lesson learnt and stored, just as well it was a rock! Stu.