Tomahawk II Reticle Manual

Page 1

TOMAHAWK II

RETICLE GUIDE

TABLE OF CONTENTS Intro to SFP 1 Guerrilla Dot BDC 2 Bullet Drop Compensation 5.56 NATO 3 Bullet Drop Compensation .308 WIN/7.62x51 4 Guerrilla Dot 1-4 BDC Subtensions 5 Guerrilla Dot 1-6 BDC Subtensions 6 Rapid Ranging 7 BFO Reticle 8 BFO 1-4x Subtensions 9 BFO 1-6x Subtensions 10 MOA Ranging 11 Ranging Examples 12 Dope Sheet 13

INTRO TO SFP

A second focal plane (SFP) scope means the reticle is placed behind the magnification lens. The advantage of a SFP optic is the reticle always remains the same size as you shift through magnification. When shooting with this SFP scope, be aware that the listed reticle subtensions used for estimating range and holdover are only accurate at the highest magnification.

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GUERRILLA DOT BDC

The Guerilla Dot BDC is versatile across multiple platforms, calibers, and situations. Delivering fast and accurate target acquisitions with the near 1x view, while also presenting various holdovers for mid-range engagements.

Designed for the AR platform utilizing 5.56 NATO trajectory.

Based on the following ballistics parameters:

•Lake City/Federal 5.56 NATO

•55gr FMJ/CM193

•Ballistic Coefficient: .243

•Muzzle Velocity: 3,101

•Barrel Length: 16”

The Guerilla Dot BDC also includes holdovers for 7.62X51/.308 Win.

Based on the following ballistics parameters:

• Hornady .308 Win 155gr

• Ballistic Coefficient: .435

• Muzzle Velocity: 2,865 fps

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5.56 NATO 55GR FMJ; BASED ON 50/200 YARD ZERO

Bullet drop subtensions are designed to work with the optic at the highest magnification. The center dot and its corresponding zeros can be used at any magnification.

50 0.0 0.5 -2.3 -5.8 -11.2 -28.6 -57.5 -77.7 0.0 0.5 -1.1 -2.2 -3.6 -6.8 -11 -13.5 100 200 250 300 400 500 550 Range (yd) Drop (in) Drop (MOA) 3 4 5 6 2 1 1 1
BULLET DROP COMPENSATION
3 1 5 1
250yds 400yds 550yds 500yds 3 300yds 50/200yds 4 6
2

BULLET DROP COMPENSATION

.308 WIN/7.62X51 155GR; BASED ON 50/200 YARD ZERO

Bullet drop subtensions are designed to work with the optic at the highest magnification. The center dot and its corresponding zeros can be used at any magnification.

1 5 1 2 240yds 410yds 610yds 540yds 3 300yds 50/200yds 4 6 4 50 0.0 0.4 -2.7 -5.4 -11.4 -28.7 -61.9 -86.4 0.0 0.3 -1.3 -2.2 -3.6 -10.9 -13.5 100 200 240 300 410 540 610 Range (yd) Drop (in) Drop (MOA) 3 4 5 6 2 1 1 1
-6.7

2 MOA Center Dot/50-100 YDS

A

Outside Diameter 23 MOA

B

Inside Diameter 19 MOA

9.5 MOA
2 MOA 3 MOA 1 MOA 4 MOA
2.2 MOA/250 YDS
6.35 MOA 4.77 MOA 3.82 MOA 3.6 MOA/300 YDS
A
6.8 MOA/400 YDS 11.0 MOA/500 YDS 13.5 MOA/550 YDS
B
DOT 1-4X BDC SUBTENSIONS 5
GUERRILLA

1 MOA Center Dot/50-100 YDS

A

Outside Diameter 23 MOA

B

Inside Diameter 19 MOA

9.5 MOA
2 MOA 3 MOA 1MOA 4 MOA
2.2 MOA/250 YDS
6.35 MOA 4.77 MOA 3.82 MOA 3.6 MOA/300 YDS
A
6.8 MOA/400 YDS 11.0 MOA/500 YDS 13.5 MOA/550 YDS
B
DOT 1-6X BDC SUBTENSIONS 6
GUERRILLA

RAPID RANGING

The Guerrilla Dot BDC can be used to estimate distance to target based upon various reference points.

7
100 300 400 500 19 6.36 4.77 3.82 20” 20” 20” 20” Distance (yd) Target Width (in) Holder Width (MOA) 1 2 3 4
1 2 3 4
Shoulder Ranging Bars

BFO RETICLE

Based on Minute of Angle (MOA) subtensions, the BFO (Bright Fiber Optic) is calibrated using angular measurements that are derived from degrees and minutes. These angular measurements are then used to estimate range and correct bullet drop in riflescopes, with 1 MOA corresponding to 1.05" for every 100 yards, or 29.1mm.

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0.9 MOA Center Dot/50 -100 YDS

2.5 MOA

1.1 MOA Line

50 MOA

5 MOA INCREMENTS

4 MOA

2 MOA

5 MOA

30 MOA

20 MOA

9 BFO 1-4X SUBTENSIONS

0.6 MOA Center Dot/50 -100 YDS

2.5 MOA

0.8 MOA Line

50 MOA

5 MOA INCREMENTS

3 MOA

2 MOA

5 MOA

30 MOA

20 MOA

BFO 1-6X SUBTENSIONS 10

MOA RANGING

Ranging with MOA is very easy and effective by simply knowing the size of the target in inches. If you cannot determine the size of the target, use a nearby object.

Target Size (inches) x 95.5 = Range (Yards)

Measured MOAs

Target Size (cm) x 34.38 = Range (Meters)

Measured MOAs

11

RANGING EXAMPLES

To range with the BFO reticle, simply use the 5 MOA markings on windage or elevation to size the target.

18.125” 30”

100 YDS ~ ~200 YDS

12
13
(yd)
(in)
(MOA)
4 5 6
DOPE CHART AMMO GRAIN BALLISTIC COEFFICIENT MUZZLE VELOCITY Range
Drop
Drop
3
2 1 1 1
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