Vortex STRIKE EAGLE User manual

PRODUCT MANUAL

STRIKE EAGLE®
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STRIKE EAGLE®1-8x24 FFP
At Vortex Optics, the need for high-performance,
precision optics is the driving force behind all that we
do. We’ve carefully built the Strike Eagle®1-8x24 FFP
riflescope to provide shooters with the ultimate short to
medium-range tactical riflescope.
Windage Turret
Elevation Turret
Throw Lever
Ocular Lens
Objective Lens
Magnification
Adjustment Ring
Illumination Dial &
Battery Compartment
Fast-Focus
Eyepiece
Images are for representation only. Product may vary slightly
from what is shown.
CONFIGURATION 1-8x24
FOCAL PLANE First Focal Plane (FFP)
RETICLE EBR-8
ILLUMINATION Yes
ILLUMINATION SETTINGS 11 Settings Total.
9 Daylight & 2 Night Vision
BATTERY TYPE CR2032
BATTERY LIFE 47 hours @ intensity 5
EYE RELIEF 3.9"
LINEAR FIELD OF VIEW
@ 100 YDS
1x = 113.6', 21.4°
8x = 14.1', 2.7°
TURRET STYLE Capped
TUBE SIZE 30mm
ADJUSTMENT GRADUATION 1/4 MOA
TRAVEL PER ROTATION 25 MOA
TOTAL ELEVATION ADJUSTMENT 145 MOA
TOTAL WINDAGE ADJUSTMENT 145 MOA
PARALLAX SETTING 125 yds.
WEIGHT W/ BATTERY 23.9 oz.
H2
H3
L1
L5
L4
L3
H1
L2
H4
LENGTHS
L1 L2 L3 L4 L5
10.4"
(264.2mm)
6"
(152.4mm)
3.8"
(96.5mm)
2.5"
(63.5mm)
1.9"
(49.0mm)
DIAMETERS &
HEIGHTS
H1 H2 H3 H4
1.89"
(48mm)
1.93"
(49mm)
.14"
(3.5mm)
1.18"
(30.0mm)

STRIKE EAGLE®
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INITIAL SET UP
Reticle Focal Plane
(Second Focal Plane vs First Focal Plane)
All riflescope reticles can be termed either first focal
plane (FFP) or second focal plane (SFP), with respect
to the reticle’s location within the optical system. An
SFP reticle is visually consistent in size and weight
across the magnification range; however the subtension
values are only accurate on one magnification, typically
the highest. In contrast, an FFP reticle will scale
with magnification, and their subtensions used for
ranging, holdovers, and wind corrections will remain
constant. The reticle size will appear larger at higher
magnifications, and smaller at low magnification.
First Focal Plane Reticle
This riflescope features a first focal plane (FFP) reticle.
FFP reticles are located within the riflescope near the
windage and elevation turrets, in front of the erector
tube. This style of reticle will appear to grow and shrink
as you change the magnification.
Low Magnification High Magnification
Ocular Focus – Fast-Focus Eyepiece
The ocular focus is typically a one-time adjustment
used to focus the reticle for maximum sharpness.
This adjustment is slightly different for every shooter.
A clearly focused reticle is a critical component for
accurate shooting. When setting up a scope, this should
be the first adjustment you make and should only need
to be changed from user to user, or if your eyesight
changes over time.
Ocular Focus - Fast-Focus Eyepiece Adjustment
The Strike Eagle®
1-8x24 FFP uses a
Fast-Focus Eyepiece
designed to easily
adjust the focus on the
riflescope’s reticle.
WARNING: Looking directly at the sun through a
riflescope, or any optical instrument, can cause
severe and permanent damage to your eyesight.
Adjusting the reticle focus to your eye:
1. Turn the magnification ring to the highest power.
Looking through the optic, turn the Fast-Focus
Eyepiece counterclockwise until the reticle is
slightly blurry.
2. While looking at a white wall or a clear blue sky,
taking short glances through the optic, turn the
Fast-Focus Eyepiece clockwise until the reticle
is clear and crisp as soon as you look through the
optic. This may take several attempts.
Note: You do not want your eye to focus to the reticle, rather
you want the reticle in focus to your eye instantly when looking
through the optic. Looking away and letting your eyes refocus
is important in getting the Fast-Focus Eyepiece set correctly.

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You may notice that on 1x you have to make an
additional adjustment to the Fast-Focus Eyepiece
to achieve a flat field of view. This is specific to all
1x optics.
Adjusting the Fast-Focus Eyepiece for the Flattest Field
of View on 1x:
• Turn the magnification ring to 1x. While looking
at an object about 25 yards away, taking short
glances through the optic, turn the Fast-Focus
Eyepiece clockwise, until the image is true 1x.
The object should appear the same size through
the optic as it does to your naked eye. This may
take several attempts.
Note: This will be a target-dependent adjustment for close range
shooting and may cause the reticle to appear slightly out of
focus on the highest power.
Once this adjustment is complete, it will not be
necessary to refocus every time you use the riflescope.
However, because your eyesight may change over time,
you should recheck this adjustment periodically.
Parallax
The Strike Eagle®1-8x24 FFP comes equipped
with a fixed parallax setting at 125 yds. There is no
adjustment on this model.
Magnification Adjustment
The magnification
adjustment is used to
change the riflescope’s
“power.” The Strike
Eagle®1-8x24 FFP is a
variable powered optic
with an 8x optical
design. This will allow you to change the power from
1x to 8x using the Magnification Adjustment Ring.
To adjust your optic’s magnification, rotate the
Magnification Adjustment Ring clockwise, or
counterclockwise, to increase or decrease the
magnification to your desired level.
Throw Lever
Make magnification
adjustments smooth and
easy by attaching the
included Throw Lever.
Installation
1. Find the center of travel on your riflescope’s
Magnification Adjustment Ring. This should ensure
that the Throw Lever does not contact anything on
the rifle.
2. Gently spread the ring enough to get it over
the eyepiece.
3. Slide the Throw Lever onto the magnification ring at
the desired position.
4. Insert the hex screw through the unthreaded hole
in the lever and into the ring and tighten only
until snug and the ring does not slip when rotated.
If you use a torque wrench, tighten to 2.2 inch-
pounds (in.lbs.).
5. Test to ensure the Throw Lever is in the best
position for you. To adjust, simply loosen
the screw and reposition the lever to a more
comfortable position. Then, retighten the screw
and test the new position.
Throw Lever

STRIKE EAGLE®
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TURRETS
Turrets are used to adjust the bullet’s point of impact.
The Strike Eagle®1-8x24 FFP uses 1/4 MOA turret
adjustments on both the Windage and Elevation Turrets.
Each click will move the bullet’s point of impact
roughly 1/4" at 100 yards. The turret on the top of the
riflescope is the Elevation Turret,
which is used to adjust the bullet’s
point of impact up and down. The
turret on the right-hand side of the
rifle scope is the Windage Turret
and is used to adjust the bullet’s
point of impact left and right.
Turrets – Minute of Angle (MOA) Adjustment
Minute of Angle is an angular unit of measurement
commonly found in riflescopes. It is used to measure
bullet drop, wind holdovers, and for measuring targets.
Both the reticle and turrets will be laid out in specific
MOA values. 1 MOA equates to 1.047" at 100 yards,
2.09" at 200 yards, 3.14" at 300 yards, etc. Being
an angular unit of measurement, the inch value of
one MOA will increase/decrease proportionally as you
increase/decrease the distance you are shooting. For
this reason, think about all of your adjustments in
MOA, rather than a linear unit such as inches. If your
turret, reticle, and drop chart are all laid out in MOA,
adjusting your scope for the bullet drop or windage
corrections is extremely easy.
Windage Turret
Elevation Turret
50
Yards 100
Yards 200
Yards 300
Yards
1 MOA = 1.047" per 100 yards.
1 MOA
0.5235"
1 MOA
1.047"
1 MOA
2.094"
1 MOA
3.141"
Capped Turrets
The Strike Eagle®1-8x24 FFP has capped turrets. This
protects the turrets from accidental adjustment while
out in the field, in transit, or in storage. You will need
to remove the caps prior to making any adjustments on
the turrets.
Note: The scope is still waterproof with the caps removed.
To Make Turret Adjustments:
1. Remove the turret caps by spinning
them counterclockwise.
2. Following the directional arrows, turn the dials in
the direction you wish the bullet’s point of impact
to change. (If you hit high, dial down. If you hit
low, dial up. If you hit right, dial left. If you hit left,
dial right.)
3. When finished adjusting, replace the turret caps.
Note: The reticle will move in the opposite direction of the
turret dials. When you dial up, the reticle will move down,
forcing you to aim higher, changing your point of impact in
the upward direction.

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Illumination
The Strike Eagle®1-8x24 FFP uses a variable intensity
reticle illumination system, found on the optic’s
left-hand side. To activate the illumination, rotate the
illumination dial to the
desired intensity setting.
The Strike Eagle®has
nine daylight illumination
settings, and two night
vision compatible settings.
To turn the illumination
off, dial the Illumination
Dial to “0.”
Note: When the illumination is off, the reticle will appear black.
Battery Installation/Replacement
To install/change the battery, unscrew the Illumination
Dial’s cap and install a new CR2032 battery with the
positive (+) facing out.
Replacing the Battery
1. While holding the Illumination Dial, unscrew the
cap using the coin slot.
2. Remove the CR2032 battery.
3. Replace with a new CR2032 battery with the
positive side (+) facing out.
4. Reinstall the Illumination Dial Cap.
Illumination
Control Dial
Battery Cap
RIFLESCOPE MOUNTING
To get the best performance from your riflescope,
proper mounting is essential. Although not difficult,
the correct steps must be followed. If you are unsure of
your abilities, use the services of a qualified gunsmith.
Please take note of the instructions on the following
pages. For the proper scope mounting procedure
go to VortexOptics.com/vortex-nation-videos for a
video tutorial.
Riflescope Mounting Checklist
• Gun vise or a solid platform for your rifle
• Scope rings
• Torque wrench
• Reticle leveling tool(s) (such as feeler gauges or
bubble levels and a plumb bob)
Recommendation: Pick up
the Vortex®Torque Wrench
Mounting Kit, which comes
with the complete set of bits
needed to install Vortex®
scopes and rings.

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Rings and Bases
The Strike Eagle®1-8x24 FFP features a 30mm main
tube. Be sure to select a base and matching rings
appropriate for your rifle and mount according to
manufacturer’s instructions.
Tip: Selecting the proper ring height to provide
appropriate clearance between the riflescope and any
part of the rifle is paramount. The proper height will
also allow for a comfortable head position and aid in
establishing a solid and consistent shooting position.
The height of a ring will not have an adverse effect on
accuracy and overall range or performance.
Eye Relief and Reticle Adjustment
After installing the bottom ring halves on the mounting
base, place the riflescope on the bottom ring halves and
loosely install the upper ring halves. Before tightening
the scope ring screws, adjust for maximum eye relief to
avoid injury.
1. Set the riflescope to its highest magnification.
2. Move the riflescope fore and aft in the rings until
you achieve a full, unobstructed sight picture.
3. Without disturbing the fore-aft placement, rotate
the riflescope until the reticle is level. Use leveling
tools such as feeler gauges or bubble levels and a
plumb bob to aid in this process.
4. After leveling the reticle, tighten and torque the
ring screws down per manufacturer’s instructions.
Use caution and do not over tighten ring screws.
Note: We typically suggest 15-18 in-lbs of torque on the ring
screws. If the mount/ring manufacturer suggests more or less,
contact the Vortex Technical Department for best instructions.
For base clamp screws on the rings/mounts, reference the ring
manufacturer’s specifications. We do not recommend liquid
thread-locking compound on the ring screws.
If you have questions about a specific setup, please
call our Technical Department at:
1-800-4VORTEX (1-800-486-7839) Ext 5
SIGHTING IN YOUR RIFLESCOPE
Bore Sighting
Initial bore sighting of the riflescope will save time and
money at the range by roughly aligning the scope to
the rifle. This can be done several ways, either by using
a mechanical or laser bore sighter according to the
manufacturer’s instructions, or by removing the bolt
and sighting through the barrel.
To Visually Bore Sight a Rifle
1. Place the rifle on a solid rest and remove the bolt.
2. Sight through the bore at a target approximately
100 yards away.
Note: It will help to have larger, high contrast target to
focus on as it can be difficult to pick up smaller targets
through the bore of the rifle.
3. Move the rifle and rest until the target is visually
centered inside the barrel.
4. With the target centered in the bore, make the
windage and elevation adjustments until the reticle
is also centered on the target. You may notice the
reticle travels in the opposite direction as listed on
the turrets. This is completely normal.

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Final Range Sight-In
After the riflescope has been bore sighted, final
sight-in should be done at the range using the
exact ammunition you expect to use while hunting
or shooting competitively. Sight-in and zero the
riflescope at the preferred distance. 50 or 200 yards
are the most common zero distances for this optic.
1. Following all safe shooting practices, fire a three-
shot group as precisely as possible to determine
an average point of impact to correct from. This
will also help you establish the weapon system’s
accuracy potential.
2. Adjust the turrets to correct for any offset in
your point of impact. Be sure to read pages 8-9
prior to adjusting.
3. Fire another three-shot group to establish another
average point of impact. This procedure may be
repeated as many times as necessary until your
point of impact and your point of aim are in the
same place, and you have achieved a perfect zero.
Note: Vortex®does not recommend the use of a weighted
gun vise, as it can put extreme stress on the gun, stock,
scope, and mounts. It is best practice to use a combination
of sandbags or a bipod and sandbags. Letting your weapon
recoil naturally also provides consistency from shot to shot.
Reindexing the Elevation and Windage Turrets
After the rifle and scope have
been zeroed in, the elevation
and windage dials should be
reindexed to their zero indicators.
This will allow you to accurately
keep track of elevation or windage
corrections dialed on the turrets in
the field, and quickly return to an
original zero-point setting.
2mm Hex Screws
To Reindex the Turrets
1. While holding the elevation/windage turret cap
firmly between thumb and forefinger to prevent any
rotation, use the 2mm hex wrench to loosen and
remove the central screw on top of dial.
2. Gently pull the turret dial straight up and off of the
turret post, being careful not to rotate the post.
3. Reinstall the turret dial, lining up the “0” mark
with indexing mark on the scope body and replace
the central screw on top of dial.
4. Replace the turret cap.

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TROUBLESHOOTING
Please consult the following list prior to returning a
riflescope for service. Many times, a problem thought
to be with the scope is a mounting issue. Be sure the
correct rings and bases are being used and that they
are properly torqued to the rifle. Be sure there is no
free play in the scope, base, or rings.
Common Issues
Point of Impact is Inconsistent or Changes Drastically
After Turret Adjustment.
• Verify that the ring screws are not over-torqued.
Ring screws should only be torqued to Vortex®
recommendations, and no thread locking compound
or lubricants should be applied. Over-torquing ring
screws will cause excess pressure on the tube, which
may cause problems when making turret adjustments.
• Remove the scope from the rings and visually check
the scope tube for slide marks, and/or indentations
from over-torqued, or out-of-spec rings.
• Ensure the rifle’s action screws are tightened to the
rifle manufacture’s specification.
• Be sure that the base is tightened using thread-
locking compound to the top of the rifle’s receiver
to manufacturer’s specs.
• If using the scope on an AR style rifle, ensure that
the cantilever mount/rings are mounted only to the
top of the receiver. The cantilever mount/rings need
to be mounted to a single, solid surface. Make sure
the forward connection of the cantilever mount, or
ring, is not mounted to the fore-end of the rifle.
• Be sure the rifle barrel and action are clean and free
of excessive oil or copper and powder fouling.
MAINTENANCE
Cleaning
Your Vortex®riflescope requires very little routine
maintenance other than periodically cleaning the
exterior lenses. The scope’s exterior may be cleaned
by wiping with a soft cloth. When cleaning the lenses,
be sure to use products that are specifically designed
for use on coated optical lenses.
• Be sure to blow away any dust or grit on the lenses
prior to wiping the surfaces.
• Using your breath, or a very small amount of water
or pure alcohol, can help remove stubborn dried
water spots.
Lubrication
All riflescope components are permanently lubricated,
so no additional lubricant should be applied.
Note: Other than removing the turret caps, turret indicators, and
battery cap do not attempt to disassemble any components of
the riflescope. Disassembling of riflescope may void warranty.
Storage
If possible, avoid storing your scope in direct sunlight
or any very hot location for long periods of time.

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• Some rifles and particular ammunition do not work
well together. Try different ammunition and see if
accuracy improves.
Insufficient Windage & Elevation Adjustment Range
• Be sure you have the proper base and rings for
your rifle. If you need assistance, contact a local
gunsmith or the Vortex Technical Department.
• Once you have verified you have the correct base
and mounts, and that you have been properly fitted
for your gun, make sure you have followed the
correct mounting procedure. See the Riflescope
Mounting section on pages 11-12.
• Insufficient windage or elevation adjustment range
usually indicates problems with the mounting, base
mount holes drilled in the rifle’s receiver, or barrel/
receiver misalignment.
Reticle is Blurry/Cannot Focus on the Reticle and Target
Simultaneously OR Image is Larger than 1x while on 1x on
the Magnification Dial
• Check and reset the ocular focus for the shooter’s
eye. See Riflescope Adjustment section, Ocular Focus
- Fast Focus Eyepiece Adjustment on pages 5-6.
Reticle is Upside Down
• Riflescope is likely backwards. Confirm that you are
looking through the larger end of the Strike Eagle®
1-8x24 FFP riflescope.
Reticle is Moving the Wrong Direction
• The reticle will always move opposite of the turrets.
Markings on the turrets indicate point of impact
change. If you dial down on the turret, the reticle
will move upward, forcing you to move the gun
down, changing your point of impact in the
downward direction.
VIP WARRANTY
OUR UNCONDITIONAL PROMISE TO YOU.
We promise to repair or replace
the product. Absolutely free.
Unlimited.
Unconditional.
Lifetime Warranty.
Learn more at VortexOptics.com
[e-mail] • 1-800-4VORTEX
Note: The VIP Warranty does not cover loss, theft,
deliberate damage, or cosmetic damage not affecting
product performance.
For the most up to date manual visit
VortexOptics.com

M-00319-0
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® Registered Trademark and TM Trademark of Vortex Optics. Patent Pending