Hi fellas: I just purchased a new model 12 F class in 6.5x284 and have a EGW 20 moa base coming in the mail,i have a Sightron SIII 8-32x56 scope that i want to install with Burris sig. Z 30mm rings but not sure if mediums will work or do i need highs,i don't want to buy both and go through the return crap.Any help would be greatly appreciated!!!