Arrowhead Reticle Manual

GUERRILLA DOT LONG RANGE GLASS ETCHED

I L L U M I N AT E D R E T I C L E S

GUERRILLA DOT MIL LONG GUERRILLA DOT BDC LONG GUERRILLA DOT MOA LONG

TABLE OF CONTENTS Guerrilla Dot BDC Long Bullet Drop Compensation Full Subtensions Rapid Ranging Dope Sheet

4 6 7 8

Guerilla Dot MIL Long MIL & Second Focal Plane MIL Dimensions MIL/MRAD (Miliradians) 101 Ranging Using MIL

18 19 20 21

Guerrilla Dot MOA Long MOA & Second Focal Plane Full Subtensions Rapid Ranging MOA Mathematics Ranging Using MOA

11 12 13 14 15

THE GUERRILLA DOT BDC LONG The Guerrilla Dot BDC Long is highly versatile, capable of delivering rapid target acquisition at true 1x magnification, while also providing holdovers for mid- to long-range shots. 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.

Guerilla Dot BDC Long was designed primarily for the AR platform using the 5.56 NATO trajectory, based on the following ballistics parameters: • Lake City / Federal 5.56 NATO • 55gr FMJ / XM193 • Ballistic coefficient: .243 • Muzzle Velocity: 3101 fps • Barrel Length: 16.1” The holdovers may also be used for 7.62 NATO / .308 Win., based on the following: • Hornady .308 Win 155gr • Ballistic Coefficient: .435 • Muzzle Velocity: 2.865 fps

3

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

250yds 2

Range (yd)

Drop (in)

Drop (MOA)

1

50

0.0

0.0

1

100

0.5

0.5

1

200

-2.3

-1.1

5 500yds

2

250

-5.8

-2.2

7 600yds

3 4

300 400

-11.2 -28.6

-3.6 -6.8

5

500

-57.5

-11

6

550

-77.7

-13.5

1 50/200yds 3 300yds

400yds 4 550yds 6

700yds 8 9 800yds

7

600

-102.5

-16.3

8

700

-169.4

-23.1

9

800

-265.1

-31.6

4

BULLET DROP COMPENSATION .308 WIN / 7.62 NATO 155GR FMJ; BASED ON 50/200 YARD ZERO

240yds 2

Range (yd)

Drop (in)

Drop (MOA)

1

50

0.0

0.0

1

100

0.4

0.3

1

200

-2.7

-1.3

5 540yds

2

240

-5.4

-2.2

7 670yds

3 4

300 410

-11.4 -28.7

-3.6 -6.7

5

540

-61.9

-10.9

6

610

-86.4

-13.5

7

670

-111.8

-15.9

8

810

-195.5

-23.4

9

960

-317.7

-31.6

1 50/200yds 3 300yds

410yds 4 610yds 6

810yds 8 9 960yds

5

FULL GUERRILLA DOT BDC LONG SUBTENSIONS Subtensions measured in MOA Ø = Diameter All dimensions are valid at your scope’s highest magnification value

Arrowhead 1-6x24 BDC

Arrowhead 1-8x24 BDC

Arrowhead 1-10x24 BDC

6

RAPID RANGING The Guerrilla Dot BDC Long reticle can be used to estimate the distance to target based upon various reference points.

1 2 3 4

For Rapid Plinker Plate Strikes Inner Cross Bar alignment represents 12’’ diameter @ 100yds

7

Shoulder Ranging Bars

1 2 3 4

Distance (yd) 100 300 400 500

Target Holder Width (in) Width (MOA) 20 19” 19” 19” 19”

635 477 382

CREATE YOUR OWN DOPE SHEETS FOR THE GUERRILLA DOT BDC LONG RETICLE Various factors influence the performance of a BDC reticle. Accuracy depends on aligning the holdover points to specific ballistics. Different loads, different manufacturers, and different bullet types all yield different ballistic coefficients and muzzle velocities. It is highly recommended you shoot your gun with your specific loads at each aiming point, starting with the top post on the Guerrilla Dot BDC Long reticle. You can use online or mobile phone apps with ballistics software to pull the data you need and fine tune the reticle to your gun and preferred ammunition.

Use the following page to create your own DOPE sheets.

Head to support.swampfoxoptics.com to learn more.

8

AMMO

GRAIN

BALLISTIC COEFFICIENT

Range (yd) 1 1 1 2 3 4 5 6 7 8 9

9

MUZZLE VELOCITY

Drop (in)

Drop (MOA)

THE GUERRILLA DOT MOA LONG The Guerrilla Dot MOA Long is highly versatile, capable of delivering rapid target acquisition at true 1x magnification, while also providing holdovers for mid- to long-range shots.

10

MOA & THE SECOND FOCAL PLANE Guerrilla Dot MOA Long is a Second Focal Plane reticle, meaning that the reticle will always appear to remain the same size as the scope’s magnification is changed from minimum to maximum. As you increase the magnification, the target will appear to get bigger while the reticle remains the same. Therefore, the MOA measurements on the reticle are only accurate and “true” at the highest magnification setting.

Installing the included throw lever onto your Swampfox scope makes it easy to ensure that you have reached maximum magnification before using the MOA markings as holdover aiming points.

11

MOA DIMENSIONS The red illuminated ring surrounding the center dot has an outer diameter of 18MOA and an inner diameter of 16 MOA. The ring provides a quick strike capability for fast shooting up close, while the MOA ladder provides holdovers in standard 2 MOA increments for shooters comfortable with the Minute of Angle system of measurement.

Arrowhead 1-6x24 MOA

Arrowhead 1-8x24 MOA

Arrowhead 1-10x24 MOA

12

RAPID RANGING The Guerrilla Dot MOA Long reticle can be used to estimate distance to target based upon various reference points.

Inner bars represent 12 MOA, equivalent to a 12’’ Plinker plate @ 100 yards

13

A 12’’ plinker plate @ 200 yards, equivalent to 6 MOA

Man’s shoulders (19’’/20’’) @ 100 yards, Equivalent to 20 MOA

MOA (MINUTE OF ANGLE) 101 The Guerrilla Dot MOA Long reticle is based on Minute of Angle (MOA) subtensions. MOA is an angular measurement of 1/60th of a degree. 1 MOA meausures exactly 1.047” at 100 yards, but most shooters round it down to 1” at 100 yards, called “shooter’s MOA”. MOA represents an angle, not a fixed dimension, it continues to grow by 1.047” per 100 yards. For practical purposes it is easiest to think of 1 MOA at 1” at 100 yards, 2” at 200 yards, 3” at 300 yards, and so on.

14

RANGING USING MOA In order to range targets or objects using the Guerrilla Dot MOA Long reticle, the shooter needs to know how to use the MOA ranging formula: Target Size (inches) x 95.5 = Range in Yards Image Size in MOA To obtain an accurate range, you must know the approximate size of the target in inches. Using either the vertical or horizontal MOA marks, measure the target’s apparent size in MOA while looking through the scope at maximum magnification.

Example: Assuming this combatant is 6 feet (72 inches) tall, and his body length appears to be 16 MOA tall when looking through the scope, how far away is he?

72 x 95.5 = 430 Yards 16 MOA

15

AMMO

GRAIN

BALLISTIC COEFFICIENT

Range (yd)

MUZZLE VELOCITY

Drop (in)

Drop (MOA)

1 2 3 4 5 6 7 8 9

16

THE GUERRILLA DOT MIL LONG The Guerrilla Dot MIL Long is highly versatile, capable of delivering rapid target acquisition at true 1x magnification, while also providing holdovers for mid-to long-range shots.

17

MIL & THE SECOND FOCAL PLANE Guerilla Dot MIL Long is a Second Focal Plane reticle, meaning the that reticle will always appear to remain the same size as the scope’s magnification is changed from minimum to maximum. As you increase magnification, the target will appear to get bigger while the reticle remains the same. Therefore, the MIL measurements on the reticle are only accurate and “true” at the highest magnification setting.

Installing the included throw lever onto your Swampfox scope makes it easy to ensure that you have reached maximum magnification before using the MIL markings as holdover aiming points.

18

MIL DIMENSIONS The red illuminated ring surrounding the center dot has an outer diameter of 6.15 MIL and an inner diameter of 5.55 MIL. The ring provides quick strike capability for fast shooting up close, while the MIL ladder provides holdovers in standard 0.5 MIL increments for shooters comfortable with the Miliradian system of measurement.

19

MIL / MRAD (MILIRADIANS) 101 The Guerrilla Dot MIL Long reticle is based on Miliradian (MIL or MRAD) subtensions. 1 MIL is an angular measurement subtending (equalling) 10 centimeters at 100 meters. Arrowhead’s 0.1 MIL per click turrets will shift the point of impact 1 centimeter at 100 meters with each click. MIL represents an angle, not a fixed dimension, it continues to grow by 10 centimeters every 100 meters.

The math gets a bit more difficult when working with yards instead of meters. 10 centimeters equals 3.6 inches at 100 yards, so for each 100 yards of distance 1 MIL grows by that amount.

1 MIL

1 MIL = 5 cm

50 Meters

100 Meters

1 MIL = 10 cm

1 MIL = 20 cm

200 Meters

1 MIL = 30 cm

300 Meters

20

RANGING USING MIL In order to range targets or objects using the Guerrilla Dot MIL Long reticle, the shooter needs to know how to use the MIL ranging formula.

Divide the target’s actual height in centimeters by the observed target size in MILs, then multiply by 10 to find the range in meters. __Target width (cm)__ x 10 = range in meters Observed size in MILS Example: Assuming this combatant is 6 feet (183 cm) tall, and his body length appears to be 4 MIL tall when looking through the scope, how far away is he?

183 x 10 = 457.5 4 This target is about 450 meters away.

21

AMMO

GRAIN

BALLISTIC COEFFICIENT

Range (yd)

MUZZLE VELOCITY

Drop (in)

Drop (MOA)

1 2 3 4 5 6 7 8 9

22

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