I am trying to mount a scope, I bought Leupold bases and rings. But I am only able to achieve approximately 12 MOA up and 70 MOA down with my scope. I used a ballistics calculator and with my rifle and the ammo I am using that is not nearly enough for the distance I want to shoot. I am sure that there is a simple solution, but this is my first build and I'm lost. Thanks for any help.