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Optics GrassHopper Joined: April/26/2007 Status: Offline Points: 18 
There's a lot of confusion on "mils" and "moa". What really is a "mil". Is it based on 6283.2 mils (Marine) in a circle or 6400 mils (Army)? Same thing with moa vs "shooters" moa. Are the distance equations all the same?
Because I couldn't find a one source document on all these, I wrote a paper that discusses mathematically all these things and more. It is a revision of one that I did last year but this time I incorporated the Army mil (6400) and "shooters" moa. Plus I derived all the distance equations. I also cleaned it up a bit. Plus last page has a Quick Reference Chart. It's meant to be a one source document for any questions you might have and the whole thing doesn't have to be read front to back. I'm not good at making web pages, so the best I could do the link below (the web site doesn't accept hot links), so you have to cut and paste. Any suggestions on how I could post this online at a better place would be appreciated. Bags Link ( site doesn't accept hot links unfortunately so I had to put brackets on the link below to make it nonhot. Don't include the brackets [ and ] in the link.) [http://bags.0catch.com/1A_The_Derivation_of_the_Range_Estimation_Equations.doc] Edited by Chris Farris  January/15/2008 at 17:20 