I thought I had everything all figured out, then went out to sight in and now have a problem. I have a Win Laredo 300 WM and put a Viper 6.5-20x50 on it with a 20 MOA base ( mounted with thick end to the rear ) and Warne Maxima 30mm rings. When I sighted it in at 100 yds, I only have 6.75 MOA left to go up. Something has got to be wrong somewhere. I figured with the 20 MOA base, the Viper has 65 MOA of adjustment, I would have plenty of adjustment for the approx 25 MOA I thought I would need for 1000 yards. I assumed the 100 yard zero would be almost at the very low ( down ) part of the adjustment, but it took quite a bit of up to get it on at 100, leaving me not much left. I am very new to this, am I missing something? What is it gonna take to get this set up ready for long distance? Thanks in advance for any suggestions/telling me where I screwed up.