Bushnell 20-4124EU User Manual

Size:
1.89 Mb
Download

4-12x42

Laser Rangefinder Riflescope

Model: 20-4124/20-4124EU

Lit. #: 98-0879/01-07

CONTENTS

 

 

English

 

 

 

 

 

2 - 28

 

 

 

 

 

Français

 

 

29

- 58

 

 

Español

 

 

 

59

- 86

 

 

 

Deutsch

 

 

87

- 115

 

 

Italiano

 

 

116 - 141

 

 

Português

 

142 - 167

 

English

Bushnell Yardage Pro 4-12x42Laser Rangefinder Riflescope (204124)

Congratulations on your purchase of the Bushnell® YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE. The YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE is a precision Laser Rangefinding optical instrument designed to provide many years of enjoyment. This booklet will help you achieve optimum performance by explaining its adjustments and features as well as how to care for this instrument. To ensure optimal performance and longevity, please read these instructions before using your YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE.

INTRODUCTION

Glass—Range—Adjust—allwith one product! Bushnell has combined a premium4-12x42mmriflescope with 3.5 incheye-relief,a digitally advanced precision laser rangefinder providing distances from30-800yards, and a bullet drop compensator into one outstanding product. FullyMulti-CoatedOptics deliver optimum brightness and color fidelity. The laser rangefinder is easily activated with an infrared remote trigger pad.Bullet-dropturrets eliminatehold-overguesswork. Simply install the turret that matches your caliber and load. When the range appears in the reticle, simply adjust it to the corresponding distance and holddead-on.100% waterproof / fogproof construction,Mil-dotreticle, standard and SCAN modes, and operates on3-voltbattery (included).

 

 

HOW DOES IT WORK?

Previously, you had to estimate distance to a target by means of a riflescope reticle, calculating post- to-postintervals with more or less exact results. Now you can measure the exact distance to a target withdead-onprecision instantaneously. With the YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE, you just activate the unit by pressing the infrared remote and the laser rangefinder emits invisible, eye safe, infrared energy pulses. Sophisticated digital technology instantaneously calculates distances by measuring the time it takes for each pulse to travel from the rangefinder, to the target, and back resulting in instantaneous and accurate readings within thefield-of-view.

RANGING ACCURACY

The ranging accuracy of the YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE is plus or minus one yard / meter under most circumstances. The maximum range of the instrument depends on the reflectivity of the target. The maximum distance under optimal conditions is 800 yards / 732 meters. Note: You will get both longer and shorter maximum distances depending on the reflective properties of the particular target and the environmental conditions at the time the distance of an object is being measured. The color, surface finish, size and shape of the target all affect reflectivity and range. The brighter the color, the longer the range. White is highly reflective, for example, and allows longer ranges than the color black, which is the least reflective color. A shiny finish provides more range than a dull one. A small target is more difficult to range than a larger target. The angle to the target also has an effect. Shooting to a target at a 90 degree angle (where the target surface is perpendicular to the flight path of the emitted energy pulses) provides good range while a steep angle on the other hand, provides limited ranging. In addition, lighting conditions (e.g. the amount of sunlight) will affect the ranging capabilities of the unit. The less light (e.g. overcast skies) the farther the unit’s maximum range will be. Conversely, very sunny days will decrease the unit’s maximum range.

(Figure 1)

 

 

Locking Screw

 

 

Yard/Meter Button (1.3)

 

Objective Lens

Elevation Adjustment (1.8)

Windage Adjustment (1.7)

 

 

Fast Focus (1.4)

 

Battery Cover (1.1)

 

 

 

 

 

Eyepiece

Objective Tube

 

Ocular Lens

Remote Sensor (1.6)

Main Power Button (1.2)

 

Mounting

 

 

 

 

Power Change Ring (1.5)

Please Note:

This product is specified to function at 14° F (-10°C). However, all electronic devices are susceptible to operating issues at prolonged exposure to cold temperatures. Any operating issues that occur due to temperature extremes should be temporary in nature. To help prevent this, it is recommended you install a new battery when preparing to use the device in temperatures at, or below, freezing.

(Figure 2) Infrared Remote Trigger Pad

GETTING STARTED

INSERTING THE BATTERY

Remove the battery compartment cover (Figure 1.1) by loosening the battery compartment locking screw with a coin. Insert one CR-23-voltlithium battery with polarity (+ and-)as indicated inside the compartment. Replace the battery compartment cover and secure by tightening the battery compartment locking screw.

Note: The battery will provide approximately 5,000 ranges. Remove the battery from the riflescope if it is not going to be used for longer than one month.

BATTERY LIFE INDICATOR

          

 

 

 

 

 

 

 

 

 

 

 

 

Power on Screen

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Battery: Full

 

Half

Battery: It is recommended

 

 

 

 

 

that the battery be replaced.

OPERATIONAL SUMMARY

 

 

 

 

 

WARNING: This laser rangefinder riflescope should never be used as a substitute for a binocular, spotting scope, or measuring device only, as it may result in your inadvertently pointing the gun at another person. Before using this device, always remember it is mounted on a firearm and all firearm safety precautions apply. When handling firearms, always keep the muzzle pointed in a safe direction.

While looking through the riflescope, always depress the main power button (Figure 1.2) once to turn the unit on. You can now use the infrared remote trigger pad (Figure 2) to activate the laser and

If the unit of measure appears in Yards (Y) and you would like to switch the Meters (M), simply press the Yards / Meters button (Figure 1.3) portion of the main POWER button. Conversely, when the readout is in meters, it can be switched to yards by the same process.
INFRARED REMOTE TRIGGER PAD
An infrared remote trigger pad (Figure 2) is included with the product. It was designed to attach to the forearm of the rifle and will work for either right or left hand shooters. It allows the user to maintain a stable shooting position while operating the laser rangefinder. The red triangle on the remote trigger must be faced toward the shooter and be placed on the forearm of the rifle for it to work properly and needs to be positioned within the 6 inch space outlined in Figure 7 so that it can properly communicate with the infrared sensor (Figure 1.6). The remote trigger operates on one CR2016 watch battery. To replace this battery, open the cover with a small screw driver, remove existing battery and replace with a new one and replace cover.
(Figure 7) 6 inches / 152mm
10

in-viewLED display (Figure 3). NOTE: If the unit has not been used for two or more hours, the main power button will need to first be depressed in order to use the infrared remote trigger pad. Aim the laser rangefinder at a target at least 30 yards away, depress and hold the power button or infrared remote trigger pad down until range reading is displayed. Release the power button or remote trigger pad. Note: Once activated, the laser rangefinder’s LED will remain active and display the last distance measurement for 8 seconds. You can depress the power button / remote trigger pad again at any time to distance to a new target. Once the device is on and the power button or remote trigger pad is held down for over 2 seconds, the device transitions to SCAN mode. This mode allows the range to be continuously updated for as the power button / remote trigger pad is depressed. As with any laser device, it is not recommended to directly view the emissions for long periods of time with magnified lenses.

If three horizontal line (---)appear (Figure 4), this indicates that the unit could not measure the distance properly for a number of reasons (i.e. target too far away, intense reflection, unit not aimed directly at target, etc). Three lines, one on top of another in a vertical arrangement (Figure 5) will appear indicating that the unit is measuring and the distance in yards or meters will appear (Figure 6).

(Figure 3)

(Figure 4)

(Figure 5)

(Figure 6)

NOTE: The electronics are set to automatically shut off after two hours of inactivity. Therefore, to re-instateuse of the infrared remote trigger pad, the main power button (Figure 1.2) must first be depressed.

EYEPIECE FOCUSING

This adjusts the focus so that the reticle (cross hairs) appears sharp to your eyes. All Bushnell laser rangefinder riflescopes are focused at the factory for 20/20 or corrected vision. If the reticle appears sharp, no adjustment is needed. If the reticle appears unsharp, adjust as follows.

The FAST FOCUS eyepiece (Figure 1.4) is designed to provide a precise fast focus. Simply look at a distant object for several seconds without using your scope. Then, shift your vision quickly, looking though the scope at a plain background. Turn the fast-focuseyepiece clockwise or counter clockwise until the reticle pattern is sharp and clear.

WARNING: Never look at the sun through the laser rangefinder riflescope (or any other optical instrument). It may permanently damage your eye.

VARIABLE POWER ADJUSTMENTS

To change magnification, simply rotate the Power Change Ring (Figure 1.5) to align the desired number on the power scale with the Red Arrow Indicator.

When still-huntingor stalking game, a variable scope should be set to the lowest power. You then have the widest field of view for quick shots at close range. Higher powers should be reserved for preciselong-rangeshots.

WARNING: This laser rangefinder riflescope should never be used as a substitute for a binocular, spotting scope, or measuring device only, as it may result in your inadvertently pointing the gun at another person. Before using this device, always remember it is mounted on a firearm and all firearm safety precautions apply. When handling firearms, always keep the muzzle pointed in a safe direction.

MOUNTING (See Figure 8)

To achieve the best accuracy from your rifle, your Bushnell scope must be mounted properly. (We strongly recommend that those unfamiliar with proper procedures have the scope mounted by a qualified gunsmith). Should you decide to mount it yourself:

Use the enclosed mount system. The mounts are made to fit the weaver style dovetail system. Before mounting the scope, determine approximately where you would like it to be on the rifle. The slots on the bottom of the riflescope allow you great flexibility in mounting the scope forward or to the rear.

WARNING: If the scope is not mounted far enough forward, its rearward motion may injure the shooter when the rifle recoils.

11

12

The front mount has a key that fits into the slots on the riflescope dovetail. Choose the appropriate slot and attach the front mount securely with the two scope dovetail screws. The rear mount does not have a key allowing it to slide forward or backward on the dovetail of the riflescope to fit. Loosely place it on the riflescope dovetail – leave the two screws loose for now so that the mount can slide on the dovetail.

Place the riflescope on the rifle, fitting the front and rear mounts to the weaver bases. Space the mounts as far apart as possible to provide stability. Lightly tighten the screws holding the mounts to the weaver bases.

Now look through the scope in your normal shooting position. Adjust the scope

 

(either forward or backward with the mounts) until you find the

 

furthest point forward (to insure maximum eye relief)

 

that allows you to see a full field of view.

 

Tighten the mounting screws

 

as tight as possible.

 

Key

 

(Figure 8)

Front Mount

 

Rear Mount

 

ELEVATION AND WINDAGE ADJUSTMENT

Your Bushnell® YARDAGE PRO® LASER RANGEFINDER RIFLESCOPE featuresfinger-adjustable,audible-clickelevation and windage adjustments. If the point of impact of the bullet deviates from the aiming point, then adjustment of the windage and elevation must be made.

To adjust windage, remove the threaded cap from the Windage Adjustment (Figure 1.7).

Grasp the knob and turn it in the appropriate “L” (Left) and/or “R” (Right) direction indicated by the arrows. Each “click” or increment on the adjustment scale ring will change the bullet impact by 1/4” Minute of Angle. 1/4 MOA corresponds to 1/4 inch at 100 yards, 1/2 inch at 200 yards, 3/4 inch at 300 yards and so on.

RESETTING THE ADJUSTMENT SCALE RING

This step is not necessary, but, for future reference, you may want to realign the zero marks on the Adjustment Scale Rings with the index dots.

-Using a coin, remove the center screw from the windage or elevation control. Lift the turret up being careful not to rotate it.

-Position the turret to zero, or where you would like it to be.

-Replace and tighten the center screw, making sure you do not rotate the turret.

13

14

BORE SIGHTING

 

 

 

 

Bore sighting is a preliminary procedure to

achieve proper alignment of the scope with the

rifle bore. It

is best done

using a

Bushnell

Bore Sighter. If a bore sighter is not available,

it can

be done as follows: Remove the bolt

and sight through the gun barrel at a 100 yard

target.

Then

sight through

the scope

and bring the crosshairs to the same point on the target.

SIGHTING IN RIFLE AT THE RANGE

-Remove the elevation cap. If the standard elevation turret is not installed, remove the BDC turret and install it. This is done by using a coin to unscrew the retaining screw in the center of the turret. Grasp knurl at top of the Turret and lift upward, disengaging turret from the elevation adjustment pin. Reverse to install a new turret.

-Sight-inthe rifle, firing a group of at least three shots at 100 yard target. Note the relationship of the center of group to the center or the target. Rotate the turret the required number of clicks to make the necessary point of impact move. Follow with the windage adjustment to bring shots to center of target. Fire another group to see if proper adjustment has been made. Repeat as necessary until center of group is in center of target.

-Once the rifle is sighted-inat 100 yds, you may install the proper BDC Turret for your caliber and bullet weight (see “SELECT PROPER TURRET” below).

(NOTE: When the selected BDC turret is installed, the elevation cap cannot be used. If the standard elevation turret is installed, the cap can be threaded onto the scope).

POPULAR CAILBER & LOAD COMBINATIONS

BALLISTIC

 

 

GROUP

Federal Cartridge.224 dia. 22-250Rem, 55 gr. Bear Claw at 3600 fps

G

Federal Cartridge.224 dia. 22-250Rem, 60 gr. Partition at 3500 fps

F

 

 

 

Remington Arms

.224 dia. 22-250Remington Arms , 50 gr.V-Maxat 3725 FPS

H

Remington Arms

.224 dia. 22-250Remington Arms , 55 gr. PSP at 3680 FPS

G

 

 

Winchester .224 dia. 22-250Rem, 55 gr. Ballistic Silvertip at 3680 FPS

H

Winchester .224 dia. 22-250Rem, 55 gr. PSP at 3680 FPS

G

 

 

 

Federal Cartridge

.277 dia. 270 Win, 150 gr. Ballistic Tip at 3060 fps

F

 

 

 

Federal Cartridge

.277 dia. 270 Win, 150 gr. Partition at 3000 fps

F

Remington Arms

.277 dia. 270 Win, 140 gr. PSPCL Ultra at 2925 FPS

E

 

 

 

Remington Arms

.277 dia. 270 Win, 150 gr. SPCL at 2850 FPS

D

Winchester .277 dia. 270 Win, 150 gr. Partition Gold at 2930 FPS

E

 

 

Winchester .277 dia. 270 Win, 150 gr. PP-Plusat 2950 FPS

E

Federal Cartridge

.308 dia. 30-06Spring, 180 gr. AccuBond at 2700 FPS

D

 

 

 

Federal Cartridge

.308 dia. 30-06Spring, 180 gr. Bear Claw at 2700 FPS

D

Remington Arms

.308 dia. 30-06Springfield, 180 gr.A-Frameat 2700 FPS

D

15

16

Remington Arms

.308 dia.

30-06Springfield, 180 gr. BRPT at 2700 FPS

D

Winchester .308 dia. 30-06

Sprg, 180 gr. FailSafe at 2700 FPS

D

 

 

 

Winchester .308 dia. 30-06

Sprg, 180 gr. Partition Gold at 2750 FPS

D

Federal Cartridge.308 dia. 300 WSM, 180 gr. AccuBond at 2960 fps

F

 

 

Federal Cartridge.308 dia. 300 WSM, 180 gr. Bear Claw at 3025 fps

F

Winchester .308 dia. 300 WSM, 180 gr. Ballistic Silver Tip at 3010 FPS

F

 

 

Winchester .308 dia. 300 WSM, 180 gr. Fail Safe at 2970 FPS

F

Remington Arms

.308 dia.

300 R.S.A.U.M., 180 gr. PSPCL Ultra at 2960 FPS

E

 

 

 

 

Remington Arms

.308 dia.

300 Wby Mag, 180 gr. PSPCL at 3120 FPS

F

 

 

Lazzeroni Arms .308 dia., 7.82 Patriot, 180 gr. Partition Lubed at 3184 FPS

H

Lazzeroni Arms .308 dia., 7.82 Warbird, 150 gr. Lazerhead at 3775 FPS

H

 

 

Lazzeroni Arms .308 dia., 7.82 Warbird, 168 gr. HPBT MatchKing at 3550 FPS

H

SELECTING THE PROPER TURRET

Each riflescope comes complete with seventeen interchangeable turrets. Eight of these turrets are calibrated with distance in “yards” markings and eight for “meters” covering most popular factory cartridges. The seventeeth turret has no distance calibration but is provided so that you may make your

own distance markings fit any cartridge not covered. From the Ballistic Chart below (or the complete charts on the CD), select the proper turret for use with your caliber and bullet weight combination. Example: You have a .300 WSM and are shooting the following Winchester brand load: 180 gr. Ballistic Silver Tip bullet at 3010 FPS muzzle velocity. This combination falls under Ballistic group “F”, so you would use the turret marked “F” in either yards or meters.

What if your caliber is not listed?

While we have taken great care to include as many calibers and brand names in our ballistic tables, new loads are always being developed. In additon, some shooters load their own ammunition with unique ballistic characteristics. If you cannot find your load in the ballistic tables, you can still use the BDC feature.

Option 1:

As above, sight in your rifle at 100 yds with the standard turret. Then shoot the rifle, without adjusting the riflescope, at 300 yds. Measure the bullet drop from the point of aim. Using this drop, select the ballistic group from below. If you will be shooting at longer distances then you may want to check the bullet drop at 500 yds. Because there is enormous variation in rifle barrels, chambers, and hand loads, you should thoroughly test the ballistic setting before actual hunting. You may need to move up or down one group depending upon your tests.

Option 2:

Included with the marked turrets is a blank turret. After your rifle is sighted in at 100 yds, replace the standard turret with the blank turret. Without adjusting the elevation, shoot the rifle at various distances up to the

17

18