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Caculating Wind Drift
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<blockquote data-quote="WildRose" data-source="post: 771507" data-attributes="member: 30902"><p>I use Hornady's calculator as well.</p><p></p><p>I've been doing this in my head for so long I'm not sure if I can put it to paper but I'll give it a try.</p><p></p><p>Let's start with this.</p><p></p><p>A full value wind comes from either 9:00 or 3:00. Therefore I divide 90deg by 3 = 30deg for each five minutes off of full value.</p><p></p><p>If my 500yds correction for a full value 20mph wind is 15 MOA but I only have an 11o'clock wind I just figure a 5 MOA correction and let it fly.</p><p></p><p>Or for a quicker shot I have my charts set up in inches so I can use the size of the target to calculate an even quicker windage solution.</p><p></p><p>If I'm making this shot on a white tail I'll just figure 4" from point of shoulder to the edge of the hip. If my correction is 15" I'll rough out the correction then to dividing the 48" by 15 and use the width of the shoulder blade as my correction, slide the cross hair over that far and let it fly.</p><p></p><p>There are certainly more precise ways to calculate it but for quick shots this method will definitely get the job done for you.</p></blockquote><p></p>
[QUOTE="WildRose, post: 771507, member: 30902"] I use Hornady's calculator as well. I've been doing this in my head for so long I'm not sure if I can put it to paper but I'll give it a try. Let's start with this. A full value wind comes from either 9:00 or 3:00. Therefore I divide 90deg by 3 = 30deg for each five minutes off of full value. If my 500yds correction for a full value 20mph wind is 15 MOA but I only have an 11o'clock wind I just figure a 5 MOA correction and let it fly. Or for a quicker shot I have my charts set up in inches so I can use the size of the target to calculate an even quicker windage solution. If I'm making this shot on a white tail I'll just figure 4" from point of shoulder to the edge of the hip. If my correction is 15" I'll rough out the correction then to dividing the 48" by 15 and use the width of the shoulder blade as my correction, slide the cross hair over that far and let it fly. There are certainly more precise ways to calculate it but for quick shots this method will definitely get the job done for you. [/QUOTE]
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