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anecdotal have said positive wind and leeward not ignored, in fact, is the wrong half the time, if high wind speeds (more than 15 miles), firing at 1000 yards above the target will appear the obvious error, the positive wind will make bullet earlier hence, and Lee will make the bullet trajectory become more flat, and a wind is very special, called the upper hand, basically can also be referred to as the updraft, usually appear in the valleys and mountains and other places.
Mil-dot sniper mirror, an ellipse (MIL) to another elliptical point is accounted for 3.438 MOA (standards of the United States Marine Corps, and United States Army think is 3.6 MOA)
analogy: if 1000 yards outside the enemy in the mirror the second Mil-dot scale, I immediately know error is about 35 inches, and then adjust the 14 can be shot.
Finally, a U.S. M4 Rand card to the U.S., 600 meters from the original.
Elevation Inches drift Rang
MOA mph 1 wind meters
200 2 0.50
250 3.50 0.80
300 5.25 1.20
350 7.25 1.60
400 9.50 2.20
450 12 2.80
500 14.50 3.60
550 17.25 4.50
600 22.50 5.50
F Humidity 78% 59 500 ft
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