While the yardstick will give a pretty good "quick'n dirty" check of the receiver screw holes to get a good, accurate assessment it is going to take some precision measuring. You are talking thousandth's of an inch here.
Example- if the holes are out of axial alignment by one thousandth of an inch at the receiver, 10 inches from the leading hole the error is 10 thousandth's of an inch and it grows exponentially.
If the receiver holes are out of tolerance (which is not uncommon on Remington's) there are a couple of options. If the rifle is new send it back to Remington, if not we can fix it- if the misalignment is small enough the holes can be drilled and tapped for oversize screws. If the misalignment is severe the holes are filled by silver soldering threaded screw stubs in the old holes and redrilling/tapping new holes.
Check your PM's
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