Anyone had luck with this program? I typed my info into it, and it's way off. At 685 yards it was hitting with the 580 yard circle.

.29 BC, 3600 fps, 1.5" scope hight 5000 ft elevation. That's like over 25 inches off, not acceptable for coyotes. Its not me or the gun it's a consistant sub 1/2 Moa shooter.

Anything you can think of input wise that would make the program that far off? I just can't think of an input that would put the calculation 2 feet off