I just got my new scope today and it looks awesome. Problem is I just purchased a new set of dual dovetail Leupold Hi 30 mm rings and they aren't high enough, the bell of the scope hits the barrel. So the question is do I buy super high rings or shim the bases. .020 would probably be enough to clear, but I am not sure of the load on the screws with a shim with a hard kicking gun like my 338 rum. Any suggestions? I want to go out and sight in soon so I can use this combo on a cow elk and whitetail this month.