I have the Viper PST 5-25x50 with 70 MOA adjustment. I know This means 35 up/35 down. The gun is a Ruger Precision in 300 win mag, and comes standard with a 30 MOA rail. I have a 20 MOA 1 piece mount for the scope, but I am thinking this may cause me to bottom out before getting to a 100 yard zero.

35 MOA - 30 moa rail - 20 moa rings = -15 moa. Is it just that simple...Too much MOA?