PRP 011 - Wind Formulas and Deer Hunting

These wind formulas are from Todd Hodnett and work pretty good for in the field on the fly calculation in your head and go straight to mils *Move decimal point forward 2 places for range* * for calibers larger than 308 use 5 mph constant instead of 4 mph constant* Example: Range: 500 meters= .5 mils (*/4 mph) Wind value: 8mph= 8/4=2 .5 x 2=1 mil hold into the wind

Wind value: 12 mph( 12/4=3) .5 x 3= 1.5 mils into the wind

Range: 300 meters= .3 mils (*/4 mph) Wind value: 8mph (8/4=2) .3 x 2=.6 mil hold into the wind

That works for ranges up to 700 meters. For Ranges of 700 meters and beyond add .1 to range constant

windy shooting

Here is a link to the wind speed chart

http://www.kitepower.com/beaufort.html