I looked at the picture again and I see what you mean about the back base hitting the bolt if you turn it around. The more I look at it the more I like the Picatinney rails I have went to on all my rifles. The rails are easier to install and put less torque on the scopes, while they are consideraly stronger. Maybe you could trade someone for a different set of bases---I do not know. However I am pretty sure that those rings are far too close together. And that definitley puts undue strain on the scope. Especially with such a heavy scope. Good luck and good shooting with whatever you decide. Tom.