Owner's Manual

sigsauer.com

Example:

LOS range of 500

yards at 30’ decline is

equivalent to an AMR

range of 433 yards

ANGLE MODIFIED RANGEMODES OF 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.