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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
How close is the cosign rule in slope shooting?
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<blockquote data-quote="fishingstockwell" data-source="post: 1986897" data-attributes="member: 96590"><p>This has been a great thread for me to digest. I'm continuing to progress in my long range shooting. My rifle is more than capable, consistently shooting in the .3-.5s. In the past I have used the corrected horizontal value given by the Leica 1600. From what I have read in this thread, I've been using the Rifleman's solution. </p><p></p><p>a quick studied on determining cosine appears to be that you would divided the corrected horizontal value by the line of site value to get your cosine. Once you have quickly determine your cosine with some very basic math, you would then multiply the cosine value by your dope for the line of site value to get the improved rifleman's solution.</p><p></p><p>it appears that a basic drop chart taped to the gun and this formula would be adequate for most shooting solutions in hunting conditions out to roughly 800 yards, and certainly better than just using the corrected horizontal value give by the rangefinder with TBR capability.</p><p> </p><p>Please correct me, if I have missed something, or have my formula wrong. Again, great thread and yet another advancement for the development of my long range hunting abilities. Great site and great knowledgeable members willing to help those still climbing the learning curve. </p><p> </p><p>Thank you, </p><p>Matt.</p></blockquote><p></p>
[QUOTE="fishingstockwell, post: 1986897, member: 96590"] This has been a great thread for me to digest. I’m continuing to progress in my long range shooting. My rifle is more than capable, consistently shooting in the .3-.5s. In the past I have used the corrected horizontal value given by the Leica 1600. From what I have read in this thread, I’ve been using the Rifleman’s solution. a quick studied on determining cosine appears to be that you would divided the corrected horizontal value by the line of site value to get your cosine. Once you have quickly determine your cosine with some very basic math, you would then multiply the cosine value by your dope for the line of site value to get the improved rifleman’s solution. it appears that a basic drop chart taped to the gun and this formula would be adequate for most shooting solutions in hunting conditions out to roughly 800 yards, and certainly better than just using the corrected horizontal value give by the rangefinder with TBR capability. Please correct me, if I have missed something, or have my formula wrong. Again, great thread and yet another advancement for the development of my long range hunting abilities. Great site and great knowledgeable members willing to help those still climbing the learning curve. Thank you, Matt. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
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How close is the cosign rule in slope shooting?
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