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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
9 o'clock vs. 3 o'clock wind drifts different with same wind velocity???
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<blockquote data-quote="Bart B" data-source="post: 616143" data-attributes="member: 5302"><p>How do you determine your scope's optical center?</p><p></p><p>Does it align perfectly with the scope's mechanical center?</p><p></p><p>I ask because I built my scope collimator such that the collimator's optical center is aligned with the mechanical center of the scope rings that hold the scope under test. This puts the scope to be tested in with its tube axis aligned with the collimator's optical axis. Then its easy for me to put the scope's adjustments (optical axis relative to the erector tube) on the scope's front and rear lens' optical axes.</p></blockquote><p></p>
[QUOTE="Bart B, post: 616143, member: 5302"] How do you determine your scope's optical center? Does it align perfectly with the scope's mechanical center? I ask because I built my scope collimator such that the collimator's optical center is aligned with the mechanical center of the scope rings that hold the scope under test. This puts the scope to be tested in with its tube axis aligned with the collimator's optical axis. Then its easy for me to put the scope's adjustments (optical axis relative to the erector tube) on the scope's front and rear lens' optical axes. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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9 o'clock vs. 3 o'clock wind drifts different with same wind velocity???
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