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Hunting
Long Range Hunting & Shooting
7 STW / Meopta
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<blockquote data-quote="kiwi3006" data-source="post: 316587" data-attributes="member: 8927"><p>Draw up a grid of 1 inch squares and look through the scope at it at exactly 100 yds. Work out how many inches below the crosshair each line is.</p><p> </p><p>Chronograph your load and run the info through a ballistic program, there are several free ones on the net JBM is a good one. </p><p> </p><p>The elevation adjustments in MOA will equal (close enough) the inches below the cross hair at 100 yds.</p><p> </p><p>For example if you zero at 300 yds the line closest to 7.75 inches below the crosshair will be the zero for about 400yds.</p><p> </p><p>Be aware this will only work for ONE magnification setting on your scope unless the cross hair is in the first focal plane, ie the cross hair gets bigger as you increase magnification, then it will work at all magnifications.</p><p> </p><p>Clear as mud?</p><p> </p><p>Stu</p></blockquote><p></p>
[QUOTE="kiwi3006, post: 316587, member: 8927"] Draw up a grid of 1 inch squares and look through the scope at it at exactly 100 yds. Work out how many inches below the crosshair each line is. Chronograph your load and run the info through a ballistic program, there are several free ones on the net JBM is a good one. The elevation adjustments in MOA will equal (close enough) the inches below the cross hair at 100 yds. For example if you zero at 300 yds the line closest to 7.75 inches below the crosshair will be the zero for about 400yds. Be aware this will only work for ONE magnification setting on your scope unless the cross hair is in the first focal plane, ie the cross hair gets bigger as you increase magnification, then it will work at all magnifications. Clear as mud? Stu [/QUOTE]
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