I have a new Savage 10 FCP-SR with a factory installed rail. I have mounted a Vortex 6x24 HST with Vortex rings.

After sighting in to shoot zero @ 100 yards, I only have 18 MOA of elevation adjustment left.

Is this normal ?

If I install a 20 MOA rail, that still only gives me 38 total MOA.

The scope has a total of 65 MOA adjustment for elevation.

Thank you for any help.