I used an Amercian Defense mount, it has a metal sandwich on the bottom portion of the mount that when tightened the rings are closed on the sandwich piece not the scope.
I used a CDI adjustable screwdriver type torque wrench set at 15 inch lbs.
The American Defense mount cost almost as much as the scope. With that type of mount there should only be one crease from "pinching" if it was overtightened. (if that's possible) Also this mount uses horizontal force to hold the scope in place there is no downward force from tightening the rings. I also included on page 1 a picture of the scope mounted on the rifle.
Here is a link to the mount: http://www.midwayusa.com/viewProduct/?productnumber=148803
I used a CDI adjustable screwdriver type torque wrench set at 15 inch lbs.
The American Defense mount cost almost as much as the scope. With that type of mount there should only be one crease from "pinching" if it was overtightened. (if that's possible) Also this mount uses horizontal force to hold the scope in place there is no downward force from tightening the rings. I also included on page 1 a picture of the scope mounted on the rifle.
Here is a link to the mount: http://www.midwayusa.com/viewProduct/?productnumber=148803