Let me complicate and confuse it a tad more. Run a .435 to .530 BC with around 2,900 to 3,000 FPS and the number you dial in MOA is your 5mph drift in inches, doubled is 10mph, etc. Drops off around 550 yards though. Close enough that you ain't good enough to tell. Unless you have a Kestrel in your ass. Course there's another 99 things that can go wrong.
Fun schit....
