they all can be used with good results one thing I would suggest is finding out where it's calibrated here is a link to Ted's video showing how to do that http://youtu.be/Q_ZNjBUmKq4?list=PL3034E76D37BC9470

maybe not exactly what you're looking for but 3.6 inches at 100 yards is one mill watch the video then you may have a better understanding of what I'm trying to say you must always shoot at the same magnification using that reticle for it to remain constant in a holdover situation
hope this helps