I currently have my T-Bolt Target/Varmint with a Leupold 3-9x33 rimfire scope mounted with the Browning integrated rings (12338). I'm thinking about changing the scope to a Nikon Prostaff 7 3-12x42 scope. The main problem is that the new scope has a 30mm tube. I'm trying to find a elegant way of mounting this scope. I'd appreciate if anyone had suggestions for a scope base and rings. Thank you.