Z rings are your huckleberry. Deep six the crappy Weaver stuff.
As for torque settings - just tighten them snug. You don't need a torque wrench. Howinhell did we get along for a million years tightening these things without a torque wrench?? I'll tell you how - by using common sense and a dab hand.
"You can lead a man to logic, but you cannot make him think." Joe Harz
"Always certain, often right." Keith McCafferty
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