Going to assume You have the old Redfield style base and rings , two screws hold the ring in the back and the front twists in .

To get more usable elevation from Your scope You'll need to go to a sytem that has angle built into the base . The easiest way is to go to a picatinny rail base and rings . There are many manufacturers that make this style and they can be had with 0 moa , flat , to 40 ish moa , angled , built in to the base .

This allows you to zero more towards the bottom of erector travel instead of the middle .

Depending on what rifle You have will determine availability .