Vortex Optics DIAMONDBACK 1.75-5X32 RIFLESCOPE User Manual

Contents

Riflescope Diagram Riflescope Adjustments Riflescope Installation Maintenance Troubleshooting Technical Service

Please read this entire manual before mounting your riﬂ escope.

Congratulations on your Diamondback Riflescope!

At Vortex, your love for the outdoors is the driving force behind all we do. Our commitment to you, our

customers and dealers, is unmatched in the industry—and is the strength of our success. From impressive

images to durable construction, our carefully designed and field-tested optics are the culmination of

an unwavering dedication to deliver quality, reliability and superior performance to you, our valued

customer.

Vortex Diamondback Series Riflescopes

A. Fast Focus Ring

B. Magnification Ring

C. Eyepiece

D. Windage Dial

E. Elevation Dial

F. Object ive Lens

G. Adjustable Objective (only on AO models)

Riflescope Adjustments

1. Reticle Focusing

Vortex Diamondback series riflescopes use the exclusive

Fast Focus ring to get a clear and sharp reticle image.

To focus the reticle, begin by allowing your eyes to focus on a

distant object for several moments—not looking through the

scope. Then, hold the scope up to the sky and quickly look

through it. Never look directly into the sun! Pay attention to the

sharpness of the reticle, and adjust the eyepiece focus until it is

as sharp as possible. The reticle image should be crisp and sharp

immediately when you look. Since your eyesight may change over

time, it’s a good idea to periodically re-check this adjustment.

Caution!

Riﬂ escopes are not intended for looking at the sun or any other intense light source. Such use could damage the retina and cornea of your eyes—even to the point of causing blindness.

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2. Windage and Elevation Adjustment

Vortex Diamondback riflescopes incorporate adjustable elevation

and windage dials with audible clicks. Each audible click moves the

bullet’s point-of-impact a fraction of a minute of angle (MOA).

• 1/4 MOA closely corresponds to 1/4 inch at 100 yards, 1/2 inch

at 200 yards, 3/4 inch at 300 yards...taking four (4) clicks to move

the bullet’s point-of-impact one inch at 100 yards.

How to Adjust Windage and Elevation Settings

Begin adjusting the windage and elevation settings by first

removing the covers. Then, move the dials in the direction

you wish the bullet’s point-of-impact to change. To make the

adjustments, turn the adjustment dial in the appropriate direction

(up/down or left/right) as indicated by the arrows.

After sight-in, you can re-align the zero marks on the dials with

the reference dots if you wish (see page 15). Replace covers when

done.

3. Variable Magnification Adjustments

To change the power, turn the magnification ring to the desired

level. Use lower powers (offering a

wider field of view) when you may

Magnification Ring

need to make a quick shot at closer

distances.

4. Parallax Adjustments

Parallax is a phenomenon that results when the target image does

not quite fall on the same optical plane as the reticle within the

scope. When the shooter’s eye is not precisely centered in the

eyepiece, there can be an apparent movement of the target in

relation to the reticle which can cause a small shift in the point of

aim. Parallax causes the greatest problem on small targets at high

magnification as with varmint and target shooting.

Some Diamondback riflescopes have an adjustable objective (AO)

lens. Most other models are set at the factory to be parallax-free at

100 yards; this is a setting that will work well for the majority of

shooting situations encountered in the field. A few models will be

parallax-free at 50 yards.

When shooting at distances other than 100 yards, simply pay attention to good shooting form, keeping your eye centered in the scope, and you will minimize any problems with parallax.

Adjustable Objective Lens

Setting the adjustable objective lens

Adjustable Objective

on the AO models is very easy.

A. Be sure that the reticle is properly

focused (see page 6).

B. Match the range number

on the objective lens barrel

(distance you are shooting) as closely as possible to the indicator

arrow on the riflescope body.

C. Check the setting by moving your head up/down and left/right

while looking through the scope. The setting is correct if there

is no apparent movement between the reticle and target. If

there is movement, continue adjusting the lens slightly until

the movement is eliminated.

Riflescope Installation

To get the best results from your Diamondback riflescope, proper mounting is essential. Although not extremely difficult, the correct steps must

be followed. If you are unsure of your abilities, it would be best to use the services of a qualified gunsmith.

1. Centering the Reticle

Your Diamondback riflescope is pre-set at the factory with the

reticle centered in both adjustment ranges. This is the ideal

position to begin sight-in. If you have changed the settings and

wish to re-center the reticle, follow this procedure:

A. Turn either dial (windage or elevation) as far as you can in

one direction until it stops.

B. Turn the dial in the other direction until it stops, carefully

counting the audible clicks as you turn the dial.

C. Turn the dial back again to half the number of clicks counted

in Step B —the reticle will be centered for that adjustment only.

D. Repeat for the other adjustment so that the reticle is centered

in both the windage and elevation settings.

2. Mount As Low as Possible

Using high quality, appropriately sized rings* and bases matched

to your rifle, mount the scope as low as possible on the rifle. A

low mounting will help assure proper cheek weld and aid in a

solid shooting position and fast target acquisition. We recommend

using the lowest rings that will give complete clearance of scope

and rifle. Avoid contact with barrel, receiver, bolt handle, or any

other part of the rifle. Work the riflescope’s zoom ring and rifle’s

action to assure no contact. Be sure to follow the manufacturer

instructions supplied with the rings and mounting base.

*Standard Diamondback models use 1-inch rings.

3. Adjust for Maximum Eye Relief

Before the final tightening of the scope rings, adjust for maximum

eye relief in order to avoid injury from recoil.

A. With the riflescope set at the lowest magnification, slide

the scope as far forward as possible in the rings.

B. While viewing through the scope in the normal shooting position,

slowly slide the scope back towards you. When you feel you

the full field of view, stop. Without disturbing the front-back

setting, slowly rotate the scope until the elevation dial is at the top

of the scope and the vertical crosshair of the reticle matches the

vertical axis of the rifle. Using a visual vertical reference such as the

edge of a building or telephone pole can help with this.

C. Tighten the rings per the manufacturer’s instructions.

just hit

4. Bore Sighting

Initial bore sighting of the scope at short range of 50 yards will

save time and money at the shooting range. This can be done using

a bore sighter, following the manufacturer’s instructions, or by

removing the bolt and sighting through the barrel on a bolt action

rifle. With the rifle placed solidly on a bench and the bolt removed,

sight through the bore and center the target inside the the barrel.

With the bulls-eye centered in the bore, make windage and elevation

adjustments until the reticle crosshair is also centered over the bulls-

eye. If possible, make initial windage adjustments using the mounting

base rather than the riflescope’s windage dial.

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