I use a 20 or 25 moa rail and use Burris signature XTR rings, up to 40 moa in the inserts. If you go with 50 moa rail, and it is too much, you will need insert ring to take some out. Get the 30 moa base and XTR rings. I have a Vortex Strike Eagle, the inserts have me at the bottom of my scope adjustment and I can dial to 500yds.