Deflection Greater velocity = more deflection. WIND DEFLECTION OF BULLET Point of bullet strike with NO wind. Point of bullet strike with wind.

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Presentation transcript:

Deflection Greater velocity = more deflection. WIND DEFLECTION OF BULLET Point of bullet strike with NO wind. Point of bullet strike with wind.

NO VALUE 1/2 VALUE FULL VALUE NO VALUE 1/2 VALUE 1/2 VALUE 1/2 VALUE FULL VALUE THE CLOCK SYSTEM

40° WIND VELOCITY FORMULA ANGLE OF FLAG 4 40° 4 WIND = MPH = 10 MPH THE FLAG METHOD

WINDAGE CHART – OBSERVATION METHOD MPH MPH MPH20 MPH25 MPH RANGE YARDS WIND VALUE FULLHALFFULLHALFFULLHALFFULLHALFFULLHALF WINDS CAN BE FELT LIGHTLY ON FACE AND LEAVES ARE IN CONSTANT MOTION WINDS RAISE DUST AND LOOSE PAPER WINDS CAUSE SMALL TREES TO SWAY WINDS CAUSE LARGE TREES TO SWAY

5 MPH10 MPH15 MPH20 MPH25 MPH RANGE YARDS WIND VALUE FULLHALFFULLHALFFULLHALFFULLHALFFULLHALF ° 40° 60° 80° 90°+ RANGE FLAG ANGLES WINDAGE CHART – FLAG METHOD

DETERMINING CORRECT WINDAGE ADJUSTMENTS RANGE x WIND VELOCITY (MPH) RANGE CONSTANT YARDS / METERS CLICKS FOR FULL VALUE WIND* = RANGE CONSTANT *NOTE: FOR 1/2 VALUE WIND, DIVIDE NUMBER OF CLICKS BY TWO

EXAMPLE 10 mph left wind blowing from 9 o’clock. Range to target is 500 yd/m. Range (R) = 5 Velocity (V) = 10mph 500 – yd/m range constant = 4 R x V = 5 x 10 = 50 = 12.5 or 13 clicks left on RC 4 4 windage knob Record wind conditions in the data book.

FRONT SIGHT TIP GLARE FRONT SIGHT SIDE GLARE BRIGHT LIGHT ON FRONT SIGHT POST