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A book could be written on how to properly mount a riflescope, but here are 10 quick things you might be overlooking. For example: Try using thread lock on the screws that hold the bases to the action, because these screws can work lose over time, leaving you to think your scope has gone screwy. Another example is tightening all the mounting screws to the proper torque setting, in the proper order. Then there’s the critical step of leveling the scope to the rifle. At close range, it’s not that b