RE: Leupold DD bases and Burris Sig rings?
Signature Rings would/should be compatible with Leupold bases. What I have found with Signature rings or any Burris rotary ring for that matter is that they are much tighter to rotate then a corresponding Leupold. If one were to use the old method of rotation(using a scope as a lever) you would probably bend a scope using Burris rotary rings...