Owner's Manual
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GENERAL OPERATION
Your rangefinder provides 4 modes of operation: AMR, LOS, ABU and Ballistic Group Selection. When
ABU is selected the user can pair the KILO with a nearby smartphone where the BDX App should
already be installed. The user configures a bullet profile in the app, which is actively synced with
a paired rangefinder. For example, the user downloads and installs the BDX App, selects a 0.308
caliber bullet and chooses a Barnes LRXBT 200 gr bullet – this profile is selected and saved in real-
time. The user will then configure the muzzle velocity, zero range, temperature and altitude within
the BDX App.
OPERATION - ANGLE MODIFIED RANGE (AMR) AND LINE OF SIGHT (LOS)
Angle modified range is the equivalent horizontal range to the target and is comparable to the
“horizontal leg” of a triangle. AMR is also known as “rifleman’s rule” and uses the LOS range and
angle of incline to calculate the horizontal distance the projectile travels between shooter and
target. AMR is very accurate for shorter distances (i.e. < 400 yards) and archery.
Line of sight is the range to the target independent of angle. It is comparable to the “hypotenuse”
of a triangle. When ranging in LOS mode, the distance is displayed in addition to the angle of incline.
This method is preferred for those long range shooters and hunters wanting to use the LOS range
and angle of incline to calculate a very precise holdover using a ballistic calculator smartphone
application and/or wind measurement device.
For example, if the rangefinder is in LOS mode the line of sight range of 500 yards would be
displayed along with the angle of -30 (degrees decline). Use LOS in combination with a ballistic
calculator to calculate an exact holdover in minutes of angle or milliradians.
If the rangefinder is in AMR mode the angle modified range of 433.0 yards would be displayed. This is
the equivalent horizontal range and can be used in combination with a ballistic / holdover reticle or
with the SIG Ballistic Turret SBT™ dial.