how do you drive a scope that the knobs (MOA) that don't match the reticle (mil). Seems to be an awful lot of US Optics set up that way in the classifieds lately. All I've been exposed to are turret less Leupolds with duplex crosshairs (a VX-III 4.5-14x and an LPS 1.5-6 all on hunting rifles) and am looking at pulling the trigger on something like a US Optic's with a reticle uncluttered and fine enough for shooting Prairie dogs. thank you for your time!