There is no zero stop adjustment on the razor gen ii. You zero the rifle by the brass screw, then once you are zeroed, you tighten the grub screws and you are at zero on the turret. You get 1 moa (or whatever the equivalent is in mils) below zero.
Vortex's website is screwy. For the 4.5-27 it lists 71 moa of adjustment on the specs sheet, then when you go to the features page, it lists 113 moa of adjustment. I don't know mils, but the amount of travel will be the same.
At any rate, I cracked the safe open, and with my rifle zeroed for 100 yards for a .308 and a 20 moa rail, I get three complete revolutions of the turret, for 75 moa of adjustment. Yeah, something is screwy with your setup. You should recheck your setup.
I think the way the scope works is that you get over 120 moa of initial adjustment, then once your zero is set, you get 75 moa of adjustment. So, you should be able to get your rifle zero'ed at 100 no problem.
Are you sure that you are using the brass screw to set your zero? Ignore the zero on the indexing marks when the cap is off. Just shoot, watch for your impact, adjust the elevation to get to the splash, verify that is correct at 100, readjust if necessary, and once zeroed, screw the grub screws in, replace the cap and you should be good to go.
If in doubt, ask Shawn-338 to go to the range with you.
http://www.vortexoptics.com/product...56-riflescope-with-ebr-2c-moa-reticle/reticle