Leupold BALLISTIC AIMING SYSTEM, Ballistic Aiming System Boone and Crockett User Manual

COVERCOVER

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Table of Contents

Boone and Crockett™ Big Game Reticle . . . . . . . . . . . . . . . . . . . . . . . .Page 1

Varmint Hunter’s Reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 11

Long Range Duplex Reticle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 21

Long Range Varmint Reticle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 26

Another Way to Sight In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 29

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The Leupold Ballistic Aiming

System™ – Boone and Crockett™

Big Game Reticle

The goal of every hunter is a successful hunt with a clean harvest. It was with
this in mind that Leupold® created the Leupold Ballistic Aiming System™.
Because we so strongly agree with the Boone and Crockett Club’s® legacy of
wildlife conservation and ethical fair chase hunting, we have designated one
of the system’s reticles as the Boone and Crockett™ Big Game reticle, while
the other is designated as the Varmint Hunter’s reticle.

Together, the Boone and Crockett™ Big Game reticle and the Varmint Hunter’s
reticle give the hunter two very useful tools intended to bring about successful
hunts with clean and efficient harvests. Through the use of these straightforward
and easy-to-follow instructions, it is sincerely hoped that all hunters will find
their skills improved and their hunts more successful.

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The Leupold Ballistic Aiming System provides a series of aiming points to
improve your ability to shoot accurately at longer ranges. The first aiming
point (the intersection of the Duplex® reticle) is designed to be used at 200
yards with most common cartridges or at 300 yards in several flatter shooting
cartridges designed for longer range use.

The Leupold Ballistic Aiming System provides you with two different power
selector positions, indicated by large and small triangles located within the
magnification level indicators. These are provided to allow you to select the
hold points best suited to the cartridge you are using. In some cases, the smaller
triangle setting can be used to accommodate your slower, heavier bullet load,
while the larger triangle can be used to accommodate a faster, lighter bullet
load in the same rifle. The reticle assumes bullets of similar spitzer shape will
be used throughout.

An Overview of the Leupold

Ballistic Aiming System

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As an example, a 30-06 with a 180 gr spitzer bullet and 2700 fps muzzle velocity
would require the use of the smaller triangle mark. A 30-06 with a 150 gr
spitzer bullet at 3000 fps muzzle velocity would use the larger triangle mark.
We have designated three sets of cartridges to be used in conjunction with
the large and small triangles and sight-in distances of either 200 or 300 yards,
described as Group A, Group B, and Group C:

• Group A cartridges will use the large triangle and a 200 yard zero

• Group B cartridges will use the small triangle and a 200 yard zero

• Group C cartridges will use the large triangle and a 300 yard zero

Be sure to verify the aiming points by practicing at the actual distances at
which the points are intended to work. Ballistic 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.

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(48-58 inches of drop at 500 yards)

(Less than 35 inches of drop at 500 yards)

(35-45 inches of drop at 500 yards)

4

Boone and Crockett™ Big Game Reticle Cartridge List

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General Instructions

For the Use of the Leupold

Ballistic Aiming System

5

SIGHTING-IN

The Boone and Crocket™ 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. Be sure to verify
the aiming points by practicing at the actual distances at which the points are
intended to work. Ballistic 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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The Boone and Crockett™ Big Game reticle offers:

• a Duplex central aiming point (sighted-in at 200 or 300 yards) as well
as CPC-style hold points calibrated to 300 and 400 yards, and additional
aiming features for targets at 450 and 500 yards for Group A and Group B
cartridges (add 100 yards for Group C cartridges)

• a 10 mph windage hold point at both the left and right ends of the 300 and
400 yard CPC-style hold points

• the traditional VX®-III range estimating feature between the Duplex central
aiming point and the top vertical heavy post (consult the Leupold Riflescope
Owner’s Handbook)

Specific Instructions for the

Use of the Boone and Crockett™

Big Game Reticle

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7

NOTE: When using a cartridge in Group C and sighting-in at 300 yards, add 100

to all of the above yardage indicators.

Range

Power Selector Values

10 MPH Drift

Large

Bullet Drop

Small

Bullet Drop

200 yd MOA

— — —

200 yd Inches

— — —

300 yd MOA

2.19 2.74 2.16

300 yd Inches

6.88 8.61 6.79

400 yd MOA

4.80 6.00 3.03

400 yd Inches

20.11 25.13 12.69

450 yd MOA

6.26 7.83 —

450 yd Inches

29.50 36.87 —

500 yd MOA

7.82 9.78 —

500 yd Inches

40.95 51.18 —

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In order to use the Boone and Crockett™ Big Game reticle, you must determine
which of the three groups (Group A, Group B, or Group C) your cartridge and
load fits into.

DETERMINE POWER SELECTOR SETTING

First, determine which of the triangles on the power selector is the correct
one to use with your particular rifle caliber, bullet weight and muzzle velocity.
Refer to the tables of Group A, Group B, and Group C cartridges on page 4.

Using the Boone and Crockett™

Big Game Reticle

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