Kestrel 4500NV Applied Ballistics Meter - Manual (Page 14)

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The number shown to the top right of the
screen represents the suggested range
distance at which to apply a drop scale factor
for Transonic flight (Mach 1.0). Additional
drop scale factors can be added to the
DSF table by shooting at greater distances
including subsonic flight. Attempting to
enter an additional drop scale factor that is
closer in range distance than existing DSF
table entries will invalidate and erase the
existing entries.
screen. The Kestrel will ask if you want to accept the MV
Calibration. Selecting "Yes" will use the Cal MV to update
the MV listed in the Gun Information screen.
For more information on Ballistics Calibration, please
see page 18.
Drop scale Factor (DsF)
This allows you to enter and maintain a table of drop
scale factors (DSF) that utilize observed drop at range
to calibrate the elevation computation. The number
shown to the top right of the screen represents the
suggested range distance at which to apply a drop scale
factor for transonic flight. Additional drop scale factors
can be added to the DSF table by shooting at greater
distances including subsonic flight. Attempting to enter
an additional drop scale factor that is closer in range
distance than existing DSF table entries will invalidate
and erase the existing entries.
• To access the DSF Calibration, use and to scroll to "Cal
DSF" on the Gun Information screen.
• Highlight it and press .
• Use and to adjust the range at which you are firing
• Use to scroll to “Drp.” Use and to adjust the
value to match the observed drop of the bullet at range.
• Use to scroll to “Cal” and press . The Calculated
Drop Scale Factor will be displayed at the bottom of the
screen.
Gun InFORMATIOn sCREEn (COnT.)
DSF Cal 1581m
Range 1275m
Drp 9.35mil
-Cal
DSF
0