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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Wind Direction changes our Vertical Impact......Fact or Myth?
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<blockquote data-quote="SBruce" data-source="post: 349751" data-attributes="member: 21068"><p>Thanks folks, for clearing this up a little. Much appreciated.</p><p> </p><p>I understand the Vertical Wind issue. I always thought that the slight vertical I was sometimes seeing on Prarie dogs was due to the wind "rolling" over the hill and then going back up after it "bounced" off the ground again..................It now appears that there were possibly other issues that may have been compounding this, or acting altogether on their own??</p><p> </p><p>How many of you super long rangers actually try to compensate for this effect by dialing in some vertical too?</p><p>Seems that it would be very hard to know just how much compensation to give?.................Especially since none of the Ballistic Calculators (that I've used anyway) address this at all. The NF program doesn't even have an option for vertical winds (that I've noticed) </p><p> </p><p>The Sierra program does have a vertical wind input option (at least on the old Version 2) but it appears to be vertical only (no slant or slope winds) I am assuming that you would have to figure manually what percentage or fraction of the total wind is vertical before you could input the data??</p><p> </p><p>This is just kind of a guess on my part, but I would think that a ballistic calculator/PDA/Handheld, ect. that would allow you to input the wind relative to the barrel axis (0-360, 0 being true down vertical wind) AND input the standard crosswind in the "clock" form would be the cat's meow for those people that shoot long range in the mountains or canyons, where the wind always has some vertical to it.?? </p><p> </p><p>Very interesting subject, and Thanks again for the insight.</p></blockquote><p></p>
[QUOTE="SBruce, post: 349751, member: 21068"] Thanks folks, for clearing this up a little. Much appreciated. I understand the Vertical Wind issue. I always thought that the slight vertical I was sometimes seeing on Prarie dogs was due to the wind "rolling" over the hill and then going back up after it "bounced" off the ground again..................It now appears that there were possibly other issues that may have been compounding this, or acting altogether on their own?? How many of you super long rangers actually try to compensate for this effect by dialing in some vertical too? Seems that it would be very hard to know just how much compensation to give?.................Especially since none of the Ballistic Calculators (that I've used anyway) address this at all. The NF program doesn't even have an option for vertical winds (that I've noticed) The Sierra program does have a vertical wind input option (at least on the old Version 2) but it appears to be vertical only (no slant or slope winds) I am assuming that you would have to figure manually what percentage or fraction of the total wind is vertical before you could input the data?? This is just kind of a guess on my part, but I would think that a ballistic calculator/PDA/Handheld, ect. that would allow you to input the wind relative to the barrel axis (0-360, 0 being true down vertical wind) AND input the standard crosswind in the "clock" form would be the cat's meow for those people that shoot long range in the mountains or canyons, where the wind always has some vertical to it.?? Very interesting subject, and Thanks again for the insight. [/QUOTE]
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Wind Direction changes our Vertical Impact......Fact or Myth?
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