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bullet and wind drop charts
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<blockquote data-quote="Engineering101" data-source="post: 974047" data-attributes="member: 63138"><p>FearNoWind</p><p> </p><p>The distance subtended by 1 minute of angle at 100 yards is 1.047 inches. If one approximates 1 MOA as 1 inch at 100 yards as was suggested the 0.047 part goes away and the error in total come up would be 4.7% (too low) at whatever range one tries to shoot.</p><p> </p><p>Let us take a real world example. My 30-06 loaded with 150 TTSXs will be 9.44 MOA low at 600 yards if I just point and pull the trigger. But instead of just pulling the trigger lets us dial up a correction first. So I take my 1/4 " per click scope and crank it up 9.5 inches which is as close to the 9.44 number I can get with my click value and amounts to 6 X 9.5 inches or 57 inches of come up out at 600 yards. Since 9.44 MOA actually equates to 59.34 inches the shot will be 2.34" low.</p><p> </p><p>As was suggested, just use a scope that is marked with the same click values as is output by your ballistics program and you will be good to go - no math required.</p></blockquote><p></p>
[QUOTE="Engineering101, post: 974047, member: 63138"] FearNoWind The distance subtended by 1 minute of angle at 100 yards is 1.047 inches. If one approximates 1 MOA as 1 inch at 100 yards as was suggested the 0.047 part goes away and the error in total come up would be 4.7% (too low) at whatever range one tries to shoot. Let us take a real world example. My 30-06 loaded with 150 TTSXs will be 9.44 MOA low at 600 yards if I just point and pull the trigger. But instead of just pulling the trigger lets us dial up a correction first. So I take my 1/4 " per click scope and crank it up 9.5 inches which is as close to the 9.44 number I can get with my click value and amounts to 6 X 9.5 inches or 57 inches of come up out at 600 yards. Since 9.44 MOA actually equates to 59.34 inches the shot will be 2.34" low. As was suggested, just use a scope that is marked with the same click values as is output by your ballistics program and you will be good to go - no math required. [/QUOTE]
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