background image

In the event that you should require service for your Nikon 
RIFLESCOPE, in case of USA market, please send it directly to:Nikon 
Scope Service
841 Apollo Street, Suite 100
EI Segundo, CA. 90245-4721
1-800-Nikon SV.
In other market, please bring it to dealer from which you purchased it.

Pour les autres marchés, veuillez apporter la lunette de visée au 
magasin où vous l'avez achetée.

3-9x40/1.65-5x36

Instruction manual / Mode d'emploi

OMEGA Muzzleloading
Riflescope

F

E

3-25, Futaba 1-chome, Shinagawa-ku, Tokyo 142-0043, Japan

Tel:

+81-3-3788-7697 

Fax:

+81-3-3788-7698

Manufacturer:

Printed in Taiwan (099B)/3E

Congratulations on your choice of a Nikon OMEGA Muzzleloading Riflescope. Your new scope is the 
finest example of Nikon's rugged and durable construction and precision bright optics; important 
qualities for a serious shooter's riflescope.
Whether you use your scope for hunting or for target shooting, the procedure for mounting is 
identical. You should acquire a set of high quality steel mounting rings which have a standard 
diameter of 25.4 mm (1 inch). Follow the ring manufacturer's instructions for mounting procedures. 
After mounting the scope on your muzzleloader, follow the procedures for reticle alignment.
When setting the reticle for hunting, you should determine your standard range and then adjust the 
reticle based upon that target distance. For targets which vary from that standard distance you may 
simply adjust the position of the reticle in relation to your target, or you may wish to use the 
procedure for trajectory compensation. It's up to your personal preference.
We hope that you will enjoy your new Nikon OMEGA Muzzleloading Riflescope for many years to 
come. Enjoy using it, and above all, always follow safe shooting procedures!

The product(s) described herein may be subject to export control regulations in the relevant 
country(ies). It (they) should not be exported without authorization of the exporting govermental 
authority if the regulations apply.

Caution

(1) Do not look at the sun through the riflescope. It will permanently damage your eye. This 

precaution applies to all optical devices such as cameras and binoculars.

(2)  The riflescope is effectively sealed against moisture and dust. You may use your scope 

safely either in the rain or in dusty climates. To preserve the appearance of the scope, we 
suggest that it be dried and cleaned prior to storage. Use a soft cloth for cleaning metal 
surfaces and use photographic lens tissue to clean the scope's lenses.

1. Nomenclature

Magnified Figure of 
Hand turn Grip

Fig. 1-2

Fig. 1-1

2. Specifications

Model

Actual Magnification

1.65-5x36

1.65x-5x

36

1.42

7.2

0.28

127.0-127.0

5.0-5.0

13.8-4.6

45.3-15.1

25.4

1

45.3
1.78

283

11.14

385

13.6

1 click = 1/4"

100

91.44

100

42

1.65

3-9x40

3-9x

40

1.58

4.4

0.17

127.0-127.0

5.0-5.0

7.7-2.6

25.2-8.4

25.4

1

49.3
1.94

288

11.3

390

13.8

1 click = 1/4"

60

91.44

100

42

1.65

Objective Diameter

(mm)

(in)

Exit Pupil

(mm)

(in)

Eye Relief

(mm)

(in)

Field of View at 100yds.

(m)

(ft)

Tube Diameter

(mm)

(in)

Objective Tube Diameter

(mm)

(in)

Length

(mm)

(in)

Weight

(g)

(oz)

Adjustment Graduation

(moa)

Maximum Internal
Adjustment
(Elevation & Windage)

(moa)

Parallax Setting
(at factory)

(m)

(yards)

Structure

Waterproof (maximum depth of 2 meter 
for up to 10 minites) and Nitrogen Gas

Outside Diameter of
Eyepiece

(mm)

(in)

3. Instructions

(1) Focusing

  ● 

Look through the eyepiece with your eye positioned about 10cm (4 in) away from the 

eyepiece lens (Fig. 3-1), and you will see the Nikoplex reticle (Fig. 3-2), or the BDC250 
reticle (Fig. 3-3).

Be sure your eye is positioned within proper alingment and proper eye relief otherwise the 
view will "black out".

  ● 

Point the objective end of the scope at the sky (Do not point at the sun) or at a plain 

unpatterned wall.

Turn the eyepiece adjustment counter-clockwise and then turn it clockwise until the reticle 
appears sharp.

(2) Magnification

The OMEGA Riflescope 3-9x40 has a variable magnification from 3 to 9X, 1.65-5x36 from 
1.65 to 5x.

To change powers, just rotate the power selector ring until the desired magnification appears 
adjacent to the power index dot (Fig. 1-1).

(3) Adjustment of the riflescope

Sighting through the riflescope, align the rifle with your aiming point on the target and shoot a 
trial round. If the bullet does not hit the aiming point, adjust the elevation and windage after 
removing the Adjustment cap, as follows:
For the OMEGA Riflescope adjustment is made by turning the grip by hand. If the bullet hits 
under the aiming point, turn the grip in the direction of the arrow marked "U" (Fig. 3-4). If the 
bullet hits to the left of the aiming point, turn the grip in the direction of the arrow marked "R" 
(Fig. 3-4).

(4) Zero setting of grip

 (Fig. 3-5)

After the reticle has been adjusted to the point of impacts, with the grip held with your fingers to 
avoid shifting of the aligned grip, turn the grip screw in top of the grip counterclockwise with 
coin. Then lift the grip up and align the "     " with the index mark. It may happen that the "     " 
could not align with the index mark exactly because of the coupling pitch of the grip with the 
shaft. And by securing the grip with your fingers to avoid shifting of the grip, turn the grip screw 
clockwise with the coin until the grip in firmly secured.

Note:

  ●

The windage and elevation scales of the OMEGA Riflescope are calibrated in divisions of 1/4 

minute of angle with a click at intervals of 1/4 minute of angle.

  ●

When adjusting the reticle to the point of aim, remember that one minute of angle equals 

approximately one inch (2.54 cm) at 100 yards (91.44 m). Therefore, if the impact point is 
two inches (5.08 cm) low and one inch (2.54 cm) right at 100 yards (91.44 m), you should 
adjust two minutes of angle up one minute of angle left.

Maintenance

(1) Lens cleaning

To remove dirt or fingerprint, soak gauze or lens cleaning paper (silicon-free paper sold at 
camera shop) with a small quantity of absolute alcohol (available from drugstore) and lightly 
wipe off. Wiping with handkerchief of leather is not recommended as it is likely to damage the 
lens surface.
Dust may scratch the lens surface or corrode the lens.
Brush dust off using a soft oil-free brush.

(2) Scope Exterior

Use a soft dry cloth to wipe off any dirt or finger-prints that might accumulate.
It is not necessary to oil the scope's surface.

(3) Windage/Elevation Adjustments

These adjustments are permanently lubricated. Do not attempt to lubricate them. Cover with 
caps supplied, except when adjusting, to keep out dust and dirt.

(4) Eyepiece Ajustment

This adjustment is permanently lubricated. Do not attempt to lubricate.

(5) Power Selector Ring

No lubrication is required on the power selector ring.
Do not loosen or remove screws in power selector ring.

Waterproof models:

The Nikon Riflescope is waterproof, and will suffer no damage to the optical system if submerged or 
dropped in water to a maximum depth of 2 meters for up to 10 minutes.

The Nikon Riflescope offers the following advantages: 

  ●

Can be used in conditions of high humidity, dust and rain without risk of damage.

  ●

Nitrogen-filled design makes it resistant to condensation and mold.

Observe the following when using the Nikon Riflescope.

  ●

As the unit does not have a perfectly sealed structure, it should not be operated nor held in     

    running water.

  ●

Any moisture should be wiped off before adjusting movable parts (Elevation / Windage 
adjustment knob, eyepiece, etc.) of the Nikon Riflescope to prevent damage and for safety 
reasons.

To keep your Nikon Riflescope in excellent condition, Nikon Vision recommends regular 
servicing by an authorized dealer.

3-9x40
1.65-5x36

Nikoplex Reticle

Fig. 3-2

BDC250 Reticle

Fig. 3-3

Fig. 3-4

Eyepiece Adjustment

Eye Relief

Fig. 3-1

Objective Lens
Eyepiece Lens
Elevation Adjustment
Windage Adjustment
Eyepiece Adjustment
Power Index Dot
Power Scale
Power Selector Ring
Adjustment Cap

 *

(099B)/2E

(at minimum magnification)-(at maximum magnification)
moa=minute of angle (in front of 100 yards one moa is nearly equal to one inch.)
Nikon riflescopes are factory set to be parallax free at 100 yards (91.44 m).

**

***

***

 *

**

Fig. 3-5

Reviews: