The nice thing about the signature rings is they NEVER leaver ring marks, they hold the scope extremely secure and you have the option of using the offset inserts to allow the scope reticle to be mechanically centered and bore sighted without ever touching the turret adjustments. I just mounted a Tasco TS624 on my .204 Ruger handi with sig zee rings, to get the scope bore sighted, I had to use all but a few clicks of the vertical adjustment to get centered, installed the 10 offset insert and it was right on. Without the sig zees, I would have had to shim the base to take care of the problem. They truely are great! I only buy em when they're on sale cuz they normally sell for $29-$35. Midway or Midsouth usually has em on sale several times a year. Theoutdoorsuperstore.com also has em for ~$28 regular price.