I agree with Cavetrout 30mm rings run higher then 1" rings. for the same medium to medium. One piece Talleys set to far forward for the front mount for me. I can use them on a short action 700 but a long action I usually can't pull the scope back far enough with the 1 piece Talley mounts. So either a 1 piece picanty style base or a 2 piece extension type base. Weaver/warne/leupold all make a 2 piece weaver style with a front extension style base. One piece is possibly more stable but I like the wide open ejection port the 2 piece gives.

I walk around like I'm ok, but deep down inside, I wanna buy another gun.