Originally Posted by jtkratzer
Normally, the lowest you can go is what you should be after. Call the seller/company you're buying the rings from and they should be able to tell you what rings will work based on the rifle model, base you picked, and the objective diameter of the scope.
I used a formula I found on a forum:
scope ring height: base to bottom of ring - [(outer diameter of objective lens - scope tube diameter)/2]
The TRS has a 59.4mm OD objective and a 30mm tube, which using the formula, comes out to 15.407mm-14.700mm. This without taking into account the height of the scope base (I believe it to be 3.175mm) and the contour of the barrel which should allow for a little extra room. I think it will clear it by a few mm which is fine in my book.