Leupold Hunting Equipment - Manual (Page 7)

General Instructions
For the Use of the Leupold
Ballistics Aiming System
SIGHTING-IN
The Boone and Crockett ™ Big Game reticle is sighted-in by zeroing the rifle
at the intersection of the Duplex ® reticle at either 200 yards (Group A and
B), or 300 yards (Group C). For Group C cartridges sighted-in at 300 yards, the
lower aiming marks will be correct at 400, 500, 550, and 600 yards. The scope
must then be set to the appropriate triangle to properly use the ballistics
compensation features. Be sure to verify the aiming points by practicing
at the actual distances at which the points are intended to work. Ballistics
performance of your rifle and cartridge can vary somewhat from ammunition
manufacturer data due to rifle barrel length, actual ammunition performance,
and various atmospheric conditions. See the Owner’s Manual for detailed
sighting-in instructions.
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