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When in LOS mode, an additional number
is displayed below the yardage number.
This number is an incline (INC) percentage
correction number based on angle cosine.
If the ballistic program, cellphone application,
or drop data card being used to calculate bullet drop does not
correct drop data for slope angle, the INC number can be used to
adjust bullet drop data—compensating this data for slope angle.
To do this, shooters will need to reference their level ground
bullet drop data for the LOS range displayed, and then multiply
that drop data number by the incline percentage number (INC)
to get the actual holdover for the angled shot.
Reading the Slope Angle
If an actual slope angle in
degrees is desired, use the
included Ranger 1000 Field
Reference Card to cross-
reference INC readings to slope
angles. Slope degrees are listed
on the bottom of the card.
Using the INC drop data adjustment technique will provide
acceptable hunting accuracy at these ranges:
• Out to 900 yards with slopes less than 30 degrees
(INC reading greater than 87).
• Out to 500 yards with slopes in excess of 30 degrees
(INC reading less than 87).
For demanding shooters, this technique provides a higher degree
of accuracy for long distance/steep slope shots than simply using
the HCD range and applicable bullet drop number.
Level Ground Drop Data x INC Percentage = Sloped Ground Drop Data
A two-sided (MOA or MRAD) Field Reference Card to help with these
calculations is included with the Ranger 1000. Due to space limitations
on the card, some INC Readings and Drop Data increments will fall
between the listed increments—some interpolation may be required.
INC Percentage
87.4
LOS Mode – Using the INC Number
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