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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
wind drift????
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<blockquote data-quote="Mysticplayer" data-source="post: 31339" data-attributes="member: 8947"><p>The joys of using programs that don't agree with its own math.</p><p></p><p>You are not going insane. If the drift is correct at 1.6" per MPH, then at 440yds and 15MPH of full value wind drift is:</p><p>1.6 * 15 = 24" of drift</p><p>24" of drift at 440yds = 5.45 MOA so 5 would be close enough. </p><p></p><p>Depending on the round off error in the program, 4.75 is not too bad.</p><p></p><p>Bottom line is get a rifle any rifle and go shoot. The best teacher is a 22LR and lots of Wally special ammo. After a few bulk boxes, you will have a much better understanding of wind drift and why these programs are a joke.</p><p></p><p>Chew on this one, 535gr 45 cal bullet leaving barrel at 1100fps to try an hit a target 500m (550yds) away in a switching breeze. Time of flight about 1 1/2 hours or at least soon after the smoke cloud clears or lunch (whichever is quicker).</p><p></p><p>Jerry</p></blockquote><p></p>
[QUOTE="Mysticplayer, post: 31339, member: 8947"] The joys of using programs that don't agree with its own math. You are not going insane. If the drift is correct at 1.6" per MPH, then at 440yds and 15MPH of full value wind drift is: 1.6 * 15 = 24" of drift 24" of drift at 440yds = 5.45 MOA so 5 would be close enough. Depending on the round off error in the program, 4.75 is not too bad. Bottom line is get a rifle any rifle and go shoot. The best teacher is a 22LR and lots of Wally special ammo. After a few bulk boxes, you will have a much better understanding of wind drift and why these programs are a joke. Chew on this one, 535gr 45 cal bullet leaving barrel at 1100fps to try an hit a target 500m (550yds) away in a switching breeze. Time of flight about 1 1/2 hours or at least soon after the smoke cloud clears or lunch (whichever is quicker). Jerry [/QUOTE]
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wind drift????
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