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Custom service rifle builder
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The normal practice is to set the rear sight to the desired number of clicks for the given range. If the rifle shoots high at this point, the front sight will need to be shortened. The rule is .008" = 1" at 100 yards. Once the sight shoots to the proper point with the desired number of clicks, the elevation pinion screw is loosened and the knob calibrated to the mark for the given range. As noted, some shooters don't bother with calibrating. They just count clicks.
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