Looking for the math

[cory]

What LRRPF52 said in his first post! I've done a little digging on this and it really is that complicated. I suspect that the calculators that are out there use real world data to add correction factors to the immense amount of math that goes into this. You have to remember that we're dealing with tolerances in the 0.001" range when working with numbers in the 100s of yards.

You can take a look at the following link. I've been meaning to download it and play with it, but I'm to swamped right now.
http://www.bfxyz.nl/