I don't want to rain on anyones parade, but all things being equal (210 vld 3000fps, 1200 ft ele, std baro, 300 yard zero, ect...ect....) and change only the sight height by 1/2 inch....from 1.5 to 2 inches (33.3% differance) the impact diff is only 1.17 inches...from 221.02 to 219.85 at 1000...