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Old April 14, 2019, 11:18 PM   #36
tangolima
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Join Date: September 28, 2013
Posts: 3,824
My thought exactly. We always assume the barrel flips up always the stock's center line. But it is not necessarily always so. It depends on how the rifle is held, the shape of the shooter's shoulder, and some other things. The level / plumb line rituals just get it close. But live fire is the only final check.

I would crank the elevation up and down, firing groups at different settings, while trying hard to hold the gun consistently. If the windage significantly changes with elevation, I would rotate the scope slightly to compensate.

Another rhetorical question. If the group drifts to the left with increased elevation, should I rotate the scope clockwise or counter-clockwise?

-TL

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