Yes, Millet rings (and bases) are made of steel and thus can handle a bit more torque.
There is a special tool that is used that controls the amount of torque used. However, this tool is very expensive and really not necessary. Just tighten the screws to the point that it becomes difficult to turn. However, please make certain that you alternate tightening the screws very lightly on each side before finally really tightening them down.
One other small piece of advice - use the BLUE loctite (not Red).
You have a great gun and a great scope. Enjoy it.
Zachary