Having a lot of trouble finding out the correct ring height for mounting a Bushnell 6x24x50mm Target scope' The scope has a 59mm o.d. bell 30mm tube and the base is Leupolds 15moa 1 pc mount and its going on a Remington 700 sps Varmit 26" .308 I dont know the barrel dia at the moment. Midway can't answer the question, can any of our readers indicate what the correct ring height should be using Leupold standards? Tall provides .400 base to tube which should provide adequate bell clearance. I think Ive got it.