404, you are correct. The ring heights are different to allow for the ruger receiver.

Quick note to self.....Don't buy a vx3 2.5x8 for this rifle with these mounts.........it isn't long enough to fit!!!

May have to look at Ziess 2.5x8. Bit cheaper here at the moment then the leo. Ziess believes it to be high recoil tolerant.

Thanks again for your thoughts.