Hi I am ordering a new 30mm scope rings, not shure if Medam or high is needed? Scope is Hawk 6.5 - 20 x 42 Does anyone out there have this hawk on a Streamline .22 ? Placing order Feb 23, so any help Please. The lower the better. I shot 100 .22 18.13 JSB today and 75' pellet size target...