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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: 615601" data-attributes="member: 5302"><p>Ken, there's no mention of distance in any one of the four world-wide definitions of a milliradian. They're all fractions of a circle; 1/6000th, 1/6283rd, 1/6300th and 1/6400th. Therefore, by definition, a milliradian is an angle.</p><p>What's a "true zero poi?" Never heard of that.</p><p>I've measured errors as much as 80 to 90 percent of a click's value for the first one. But subsequent clicks in the same direction are typically pretty close to value.</p><p></p><p>If you want to really see some interesting stuff, measure how much the reticule figure-eights around the target as the power's changed from limit to limit on variables. This makes visible the reason why benchresters use fixed power scopes.</p><p></p><p>If you calculate the bullet's angle of fall then compare it to that road with a steep slope, you'll learn the road had a greater angle to the horizontal than the bullet's trajectory does. And I think you meant to say "it is the plunging angle of the bullet on a horizontal target." as that's what causes large horizontal errors in range for bullet impact relative to the target.</p></blockquote><p></p>
[QUOTE="Bart B, post: 615601, member: 5302"] Ken, there's no mention of distance in any one of the four world-wide definitions of a milliradian. They're all fractions of a circle; 1/6000th, 1/6283rd, 1/6300th and 1/6400th. Therefore, by definition, a milliradian is an angle. What's a "true zero poi?" Never heard of that. I've measured errors as much as 80 to 90 percent of a click's value for the first one. But subsequent clicks in the same direction are typically pretty close to value. If you want to really see some interesting stuff, measure how much the reticule figure-eights around the target as the power's changed from limit to limit on variables. This makes visible the reason why benchresters use fixed power scopes. If you calculate the bullet's angle of fall then compare it to that road with a steep slope, you'll learn the road had a greater angle to the horizontal than the bullet's trajectory does. And I think you meant to say "it is the plunging angle of the bullet on a horizontal target." as that's what causes large horizontal errors in range for bullet impact relative to the target. [/QUOTE]
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9 o'clock vs. 3 o'clock wind drifts different with same wind velocity???
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