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Rifles, Reloading, Optics, Equipment
Equipment Discussions
Cosine Indicator
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<blockquote data-quote="ricka0" data-source="post: 58355" data-attributes="member: 3086"><p>Yes, thanks.</p><p></p><p>If you're hunting in an area where there is a good chance of uphill or downhill shooting, why not sight your rifle in for 0' in lieu of 100 yards, that way the more complicated formula is reduced to the simple formula, ie</p><p>a = d*(1-cos(w)) - p</p><p>becomes</p><p>a = d*cos(w)</p><p>where a = actual drop</p><p>d = drop</p><p>p = path </p><p></p><p>see the bottom of <a href="http://groups.msn.com/ultralongrangehunting/cos1.msnw" target="_blank">ricka's COS page</a></p></blockquote><p></p>
[QUOTE="ricka0, post: 58355, member: 3086"] Yes, thanks. If you're hunting in an area where there is a good chance of uphill or downhill shooting, why not sight your rifle in for 0' in lieu of 100 yards, that way the more complicated formula is reduced to the simple formula, ie a = d*(1-cos(w)) - p becomes a = d*cos(w) where a = actual drop d = drop p = path see the bottom of [url="http://groups.msn.com/ultralongrangehunting/cos1.msnw"]ricka's COS page[/url] [/QUOTE]
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