I didn't use a torque wrench for years, never a problem that I know of but I decided about two years ago to give it a try and I would not mount rings/bases/scope without one if I could avoid it. Getting the screws all to spec not only eliminates the guessing game but also results in uniform consistency for all 8 scope ring screws and I believe that's got to be a benefit to more consistency and longevity. I do agree that overtightening is more of a problem for most people and the torque wrench helps avoid that too. I went with the Wheeler Fat Wrench, not the most expensive but I'm satisfied with it.
