Hello kuduae,

I used only the rings from the used Sauer 600 set of EAW rings and bases. I was going to machine the bottom of the front base to lower it, or shim under the rear base to raise it, but both bases were permanently "cemented" to the action and couldn't be removed. Since I could not remove either, I added a 0.020 inch thick shim under the scope tube in the rear ring, which leveled the scope and allowed for adequate elevation adjustment with 3 - 4 minutes to spare. The scope is now zeroed to 130 yards and could be zeroed out to 225 yads if desired.