I have always used either brownells or leupold. I have the assortment set from both.I have never snapped one on the install. Only time I ever have broke a scope ring or base screw was taking one out. And then only ones that I had no clue about how they were installed. If you have a proper torque wrench and decent bits there is no reason you should be breaking screws. Nice clean threads proper amount of torque and you should no troubles.
