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Bubble level for rifle
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<blockquote data-quote="Dave King" data-source="post: 40988" data-attributes="member: 3"><p>Brent</p><p></p><p> There appears to be a bug in RSI's cant</p><p> calulations. In both of these displayed</p><p> cases the sight height matches (closely as</p><p> not all decimal places are displayed) the</p><p> 100 yard "drop" value.</p><p></p><p> I believe they've somehow linked the 100</p><p> yard drop value and the sight height to</p><p> the "start" value for the cant error</p><p> calculation, an error. Sight height</p><p> contributes to cant error, it does not</p><p> deminish the error. </p><p></p><p> Here's a screen that shows something is</p><p> obviously incorrect. </p><p></p><p> Cant is 90 degrees, as can be read from</p><p> the data on the image. This is for</p><p> trajectory data similar to a "standard"</p><p> 308 Win trajectory. Notice that the</p><p> deflection values are in error, much too</p><p> large.</p><p></p><p></p><p> <img src="http://the-king-family.com/UserPages/DaveKing/Cant-260-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p> This screen shot show data for a</p><p> trajectory similar to a 300 Win mag. </p><p> Notice the deflection error for a 90</p><p> degree cant is Zero -0- at 100 yards, an</p><p> error.</p><p></p><p> <img src="http://the-king-family.com/UserPages/DaveKing/Cant-183-1.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> </p><p></p><p></p><p>Boyd</p><p></p><p> <strong>"I've been called much worse" </strong></p><p> Yeah, me too. <img src="http://images/icons/smile.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p> And if it doesn't kill us it make us</p><p> stronger!</p><p></p><p></p><p>For any budding "rocket scientist" types.</p><p></p><p> 80.66 - 78.65 = 2.01.</p><p></p><p> 2.01 &lt;&gt; 1.75</p><p></p><p>[ 03-06-2004: Message edited by: Dave King ]</p></blockquote><p></p>
[QUOTE="Dave King, post: 40988, member: 3"] Brent There appears to be a bug in RSI's cant calulations. In both of these displayed cases the sight height matches (closely as not all decimal places are displayed) the 100 yard "drop" value. I believe they've somehow linked the 100 yard drop value and the sight height to the "start" value for the cant error calculation, an error. Sight height contributes to cant error, it does not deminish the error. Here's a screen that shows something is obviously incorrect. Cant is 90 degrees, as can be read from the data on the image. This is for trajectory data similar to a "standard" 308 Win trajectory. Notice that the deflection values are in error, much too large. [img]http://the-king-family.com/UserPages/DaveKing/Cant-260-1.jpg[/img] This screen shot show data for a trajectory similar to a 300 Win mag. Notice the deflection error for a 90 degree cant is Zero -0- at 100 yards, an error. [img]http://the-king-family.com/UserPages/DaveKing/Cant-183-1.jpg[/img] Boyd [B]"I've been called much worse" [/B] Yeah, me too. [img]images/icons/smile.gif[/img] And if it doesn't kill us it make us stronger! For any budding "rocket scientist" types. 80.66 - 78.65 = 2.01. 2.01 <> 1.75 [ 03-06-2004: Message edited by: Dave King ] [/QUOTE]
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