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By The Overwatch
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The podcast currently has 22 episodes available.
1. Determine the wind speed.
2. Divide the wind speed by the Q.W. number.
3. Multiply the Q.W. dope by the quotient.
4. Determine the SIN of your wind angle.
5. multiply the product by the SIN of the wind angle.
EX.1 - 600 yards, with a 12 mph wind from 1:00 with a 4 mph gun
1. 12 MPH wind
2. 12 / 4 = 3
3. .6 x 3 = 1.8 Mils
4. 1:00 = .5 sin
5. 1.8 x .5 = .9 Mils to adjust for the wind
EX.2 - 600 yards with a 12 mph wind from 1:30
1. 12 mph
2. 12 / 4 = 3
3. .6 x 3 = 1.8 Mils
4. 1:30 = .7 SIN
5. 1.8 x .7 = 1.26 Mils to adjust for the wind
EX.3 - 700 yards, 15 mph wind from 2:00
1. 15 x 7 = 2.14
2. .7 x 2.14 = 1.49 Mils
3. 1.49 x .86 = 1.28 Mils
Use your bullets G1 B.C. to get your gun's wind number.
EX:
.308 - 175 SMK G1 B.C. - .505 = 5 MPH GUN
6.5C - 147 ELD-M G1 B.C. - .697 = 7 MPH GUN
In this episode, I explain the error with the bullet's "true B.C."
and how to correct that if it's needed.
Where Does The Wind Matter?
https://kestrelinstruments.com/mwdownloads/download/link/id/100/
Official Overwatch website:
https://theoverwatch.wixsite.com/theoverwatch
Using the clock method, Every 30 Minutes Is A 15º Angle:
12:00 - 0º - 0
12:30 - 15º - .25
1:00 - 30º - .50
1:30 - 45º - .70
2:00 - 60º - .86
2:30 - 75º - .96
3:00 - 90º - 1
In this episode, we discuss how to get your wind angle and SIN. This will be used in our formula to calculate and dial our wind correction into our scope.
https://theoverwatch.wixsite.com/theoverwatch/blog
Using the clock method, Every 30 Minutes Is A 15º Angle.
12:00 - 0º - 0
12:30 - 15º - .25
1:00 - 30º - .50
1:30 - 45º - .70
2:00 - 60º - .86
2:30 - 75º - .96
3:00 - 90º - 1
N - E = 0º - 90º
E - S = 90º - 0º
S - W = 0º - 90º
W -N = 90º - 0º
Ranging Formula For Mils
Target size in inches x 27.77 / Target size in Mils
10" target measuring .5 Mils wide
10 x 27.77 / .5 Mils = 555.4 Yards
Click Value Formula
1/100 distance in yards / 2.777 x click
500 yards with .3 Mils = 3 clicks
5 x 2.777 / 3 = 5.4"
Episode XVI - Practicing Fundamentals of Marksmanship
Steady position
Sight picture/alignment
Controlled breathing
Trigger control
In this episode, we review how to build our Quick Drop Chart. The data we need for this is our Trued Dope from 100 - 1000 Yards, wind correction per 1 mph, cosine angle, Coriolis and spindrift correction, quick wind number, quick dope number, and optional quick drop numbers for bracketing. To see an example of the chart visit: https://theoverwatch.wixsite.com/theoverwatch/inventory
In this episode, we are going over how to build the chart with Excel to make our quick drop chart.
To make long-range hits, you must true your muzzle velocity and use the correct B.C. We go over that in this episode of The Overwatch!
I use the B.C. from Applied Ballistics by Brian Litz. The B.C. is measured at Mach 1.2 or just before Transonic. Once you have updated your B.C., you will need to shoot out to your bullet's maximum effective range (Mach 1.2) or as close to it as you can get. In your ballistic calculator, you will update your drop chart to how many Mils or MOA you need. This will true your muzzle velocity. Then confirm from 100 yards out to distance.
The podcast currently has 22 episodes available.
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