I’ve come across a problem when sighting in my scope. The elevation on the cross hairs are set as low as possible and still the rifle shoots 10” low ( + or -) at 25 yards. I was thinking of placing shim stock between the base and the rifle but I’m not sure if this is the best way of solving this problem. The setup I have is Leupold standard base and rings. I will take it all apart and start over to see if might have done something wrong but never had this problem before. Any suggestion on how to solve this problem?