I shot a doe this past week at a pretty good distance for Mississippi. 428 yards. 168 VLD worked well and the elevation was spot on. 7MOA and I was dead center. The problem was that I was off to the right a few inches. There was absolutely zero wind so other than shooter error I was wondering how much spindrift could I count on. Ballistic AE on the iphone said about 1.25 inches. What do yall use to calculate drift and acceleration. I was about 4-5 inches too far right and I know not all of that is due to the above but wanted to see how the brain trust manages that.