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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Scope Not Level With My Action
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<blockquote data-quote="barrelnut50" data-source="post: 1700503" data-attributes="member: 86350"><p>Your Scenario 1 analysis is not quite complete. Most folks will zero at 100-200 yds. For a 100 yd zero the .44" horizontal POI offset in your calculation creates a .44 IPHY angular POI error that is proportional to target range from 100 yds. At 1000 yds, for example, that angular error corresponds to a 4" POI shift. Not huge, but not zero either.</p><p></p><p>So, you want to pay attention to the reticle alignment with respect to the rifle bore. It doesn't have to be perfect, but it's worth getting the reticle alignment error down to 6 degrees or less. BTW, 6 degrees is equal to the angle between 12:00 and 12:01 on your analog wrist watch - it's not easy to gauge such small angles when looking at short distances.</p></blockquote><p></p>
[QUOTE="barrelnut50, post: 1700503, member: 86350"] Your Scenario 1 analysis is not quite complete. Most folks will zero at 100-200 yds. For a 100 yd zero the .44” horizontal POI offset in your calculation creates a .44 IPHY angular POI error that is proportional to target range from 100 yds. At 1000 yds, for example, that angular error corresponds to a 4” POI shift. Not huge, but not zero either. So, you want to pay attention to the reticle alignment with respect to the rifle bore. It doesn’t have to be perfect, but it’s worth getting the reticle alignment error down to 6 degrees or less. BTW, 6 degrees is equal to the angle between 12:00 and 12:01 on your analog wrist watch - it’s not easy to gauge such small angles when looking at short distances. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
Scope Not Level With My Action
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