Bushnell Legend 1200 ARC Rangefinder, Owner'S Manual

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If in BOW mode, the line of sight distance will display in the primary numeric display and the inclination and
horizontal distance will display in the secondary numeric displays. Bushnell determined through extensive testing and
interviews with high-profile bow hunting experts that multiple bow ballistic groups were not necessary. Bow-hunters
want to know true horizontal distance because that is how they practice shooting, and once they confidently know
that, they can make any necessary adjustments. Giving the bow-hunter anything else other than horizontal distance
creates additional confusion and uncertainty.
Many people mistakenly believe that uphill shots perform differently from downhill shots because of gravity. However,
it is not due to gravity, but more of an aberration of the sighting system used on bows. The sighting pin on a bow
resides several inches above the mechanical axis of the arrow. For example, when one is aiming 23 degrees up an
incline, the arrow is at a different angle.
RIFLE MODE EXAMPLE
Line of sight is 376 yards, angle is -33 degrees, and the bullet-drop/holdover is 28 inches. ARC not only takes into
account ballistic data based off your caliber and load from distances of 100-800 yards, but also compensates for any
uphill and downhill angles which also affect bullet-drop.