Here's a link to an old thread - where we discussed this a couple of yrs ago too ...same discussion ....maybe a little more detail ...
http://thefiringline.com/forums/showthread.php?t=327195
and don't feel alone in this process ....many of us figured it out on our own / by trial and error until we ran into someone that really understood it. Serious competition shooters figured this out years ago - but most of us don't hang out in those circles ....( and I still don't ...) ...