The rifle is a M 12 VLP in 204 Ruger, the scope (on order!) a Vortex Viper 6.5x24x50. One piece base with no elevation built in.

Approx. at what range will this set-up shoot until I run out of elevation?? That's my main question...

I will do allot of shooting at 100 yards so that's why I went with the level base...I was told that a 20 MOA base would shoot high at 100 yards.

I am thinking that a compromise would be a thin shim (under Rear end correct??) but want to hear your opinions.

What I want to hear first is how far out the gun could be expected to shoot the way it is!

Thanks Fellas!!