since nobody here is willing to be patient, I will chime in here. first thing is first, if your drop is in inches as opposed to MOA you need to first divide by the distance per 100 yds, so at 500 yds, your drop is 10 inches, divided by 5 (for 500) so your drop is now a nominal 2 MOA. this works for all distances, if your shot were 1200 yds and your drop was something crazy like 260 inches, you divide the 260 inches by 12 (again for the 1200 yds, the result would be 21 and 1/3. so once you have converted to MOA then MULTIPLY by how many tactile clicks on your particular scope make up one inch. so for .25 inch clicks, you multiply by 4 making your 10 inch at 500 Yd adjustment 2 moa, then consequently 8 clicks (because 2 times 4 is 8) i hope you follow, and i will revisit this later on