Re: MOA Ranging Formula
What you may want to do with that reticle is to range a bunch of targets at different distances and then recalculate the actual subtension (the 2 MOA units) from those readings, i.e. say a 10" target at 223 yds. occupies 2.3 2 MOA units, then the equation becomes--
10 x 100 / X / 2.3 = 223
X=1.95 inches @ 100 yds.
...now do 10 more or so and "reverse-mil" (as above) the subtension, average it and just use that as your "useable" subtension factor in the equation.
I have found that most reticle-ranging falls apart beyond 500-700 yds. or so depending mostly on size of target relative to subtension unit, magnification, and resolvability.
Last edited by sscoyote; 05-11-2014 at 11:48 PM.