RE: Scope ring hight?
for optimum accuracy you want your scope mounted as low as possible, low enough but not so low that you cant put your lens caps on. Dm1975 with your setup you should beable to use low rings. rings come in sizes low, med, high, and super high atleast thats how leupold sizes their rings. if your rings say STD size or something of that sort chances are they are med rings.
good luck