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The Muzzle Velocity Calibration function allows you to
obtain a more accurate muzzle velocity by combining
user input data and actual shot results and calculating the
actual bullet speed.
CALIBRATING MUZZLE VELOCITY:
» Scroll to and select Gun in the Ballistics Menu.
» After accurately inputting all other gun, bullet, and
scope parameters, as well as wind values and direction
of fire, scroll to MV and adjust to your best estimate of
your gun’s muzzle velocity.
» Select MV to enter the MV sub menu. Scroll to and
select Cal MV.
» The Cal MV range is the suggested target distance
at which to calibrate. For best results, find a range
where you can shoot to between 90% and 100% of the
recommended range but no further. Calibrating at less
than 90% of the recommended range will lessen accu-
racy and less than 80% or beyond the recommended
range will not be valid.
» Adjust Range to match the actual distance to your
target where you are shooting. Accuracy here is key!
Use a quality ranger finder if you are not on a measured
range.
» Apply the suggested elevation hold shown in Drop in
your scope turrets or reticle.
CALIBRATING MUZZLE VELOCITY
» Take a number of shots to determine the actual
bullet drop. Adjust Drop to match the actual
observed bullet drop of the bullet at that range.
For example, if the point of impact is 1.5 Mils
below the bullseye adjust the Drop value to be
1.5 Mils greater.
» A new MV will be automatically calculated to
match the actual impact of your round. (In this
example, the MV will be decreased.) No chrono-
graph required!
» A (+) or (-) in front of the MV value indicates the
new MV has been calibrated up or down.
» Exit to accept the new MV value.
Note! The suggested MV Cal range is the distance where the bullet
slows to Mach 1.2. If the suggested range cannot be matched it
is better to shoot at a shorter/closer distance rather than further.
However, as the MV calibration range decreases, so does MV
calibration accuracy. Try to shoot as close to the recommended
MV Cal range as possible.
Note! If the MV-Temp table has been populated, MV values
will be locked by the MV-Temp table and MV values will not be
automatically adjusted by the MV Cal procedure above.
Shop for Quality products online at:
1.800.561.8187
www.
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