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Bushnell Laser Bore Sighter Manual

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Bushnell Laser Bore SighterBushnell Laser Boresighter for .22-.50 Cal amp; 12/20 Guage Shotgun
Bushnell 740100C Gun Bore Sights - Gun Accessories -- Bushnell Riflescope Accessories 740100C Laser Boresighter: Bushnell Riflescope Accessory 740100C Laser Boresighter is bright,battery-powered laser that makes rapid,ultra-precise work of boresighting. Created to meet the demands of gunsmiths and serious shooters,Bushnell Riflescope Accessory 740100C Laser Boresighter includes arbors for .22- through .50-caliber firearms.

Part Numbers: 11185698, 42599, 74-0100c, 740100, 740100C, BS740100C, BU-BS-740100c, GS42599, Laser Bore Sighter, PP01-740100, bushnell_74-0100C
UPC: 0029757740106, 029757740106, 029757740113, 2975774010, 29757740106
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Review: Bushnell Laser Boresighter


User reviews and opinions

Comments to date: 2. Page 1 of 1. Average Rating:
rot 1:15am on Saturday, May 15th, 2010 
This product size is easy to handle. The arbor fits the selected bore size snuggly and is very stable.
padmavyuha 11:51am on Friday, May 7th, 2010 
After reading so many negative reviews I was delighted to find the Bushnell laser boresigher's construction and functionality is much better then I w... Works great and did the job very well. Easy to Install and Use","Nice compact unit","Quality built Need larger storage case","Offer Green laser

Comments posted on are solely the views and opinions of the people posting them and do not necessarily reflect the views or opinions of us.





Lit #: 98-0819/09-06

Sighting-In Chart
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Congratulations on the purchase of your Bushnell Laser Boresighter. This boresighter is a precision instrument constructed of the finest materials and assembled by highly skilled craftsmen for a lifetime of trouble-free use. This laser boresighter is designed to quickly get your rifle, handgun, or shotgun on the paper and will save you time and money. Final sighting-in should be done by shooting the firearm and fine tuning the adjustments. BEFORE BORESIGHTING YOUR SCOPE, MAKE SURE THAT THE FIREARM IS UNLOADED AND THE MUZZLE IS POINTED IN A SAFE DIRECTION Your boresighter consists of laser emitter (A) as well as a series of expandable adaptors (B) which cover.22 to.50 caliber diameters. There is also a larger adaptor designed for 20 gauge and 12 gauge shotguns. Please note that your laser boresighter is designed for use indoors or outdoors in dimmer light.

On/Off Switch

Screw Laser Diode
To select the proper adaptor, find the largest-diameter adaptor that will fit in the muzzle of your firearm. Then, screw the adaptor into the small end of the laser emitter using the small screw in the center of the adaptor. As you tighten the screw, the diameter of the adaptor will expand. Once it has expanded to match the diameter of your firearm, push the adaptor and small end of the laser emitter
into the muzzle of your rifle. Make sure that the laser emitter is inserted in until it is snug with the crown of your firearm. Turn the laser on. A small red laser dot will be emitted. If you can sight in your gun at 50 to 100 yards, you can adjust your scopes windage and elevation so that your crosshairs aim at the red dot. If you are sighting in at a shorter distance, simply adjust the point of impact so that the crosshairs compensate for the height of the center of the scope over the barrel. For example, in many typical rifle mounts, the center of the scope is about 1.5 inches above the bore. In this case, you would want the crosshairs to point 1.5 inches above the laser dot. The enclosed chart is a handy tool for this. AFTER THE FIREARM IS BORESIGHTED, BE SURE TO REMOVE THE BORESIGHTER FROM THE GUN. Final sighting in must be done at the range. After final sighting in is done, you can use your boresighter to record the actual location of your zero relative to the crosshairs. This is a handy reference if you wish to verify your zero later.
Batteries Your Bushnell laser boresighter uses 3 LR44 batteries. Sighting-In Chart Please use the chart located at the front of the manual to sight-in your firearm at shorter distances.


Laser light is 650 nm, 2.9 mW, 0 beam divergence
TWO-Year LIMITED WARRANTY Your Bushnell product is warranted to be free of defects in materials and workmanship for two years after the date of purchase. In the event of a defect under this warranty, we will, at our option, repair or replace the product, provided that you return the product postage prepaid. This warranty does not cover damages caused by misuse, improper handling, installation, or maintenance provided by someone other than a Bushnell Authorized Service Department. Any return made under this warranty must be accompanied by the items listed below: 1)A check/money order in the amount of $10.00 to cover the cost of postage and handling 2)Name and address for product return 3)An explanation of the defect 4)Proof of Date Purchased 5)Product should be well packed in a sturdy outside shipping carton, to prevent damage in transit, with return postage prepaid to the address listed below: IN U.S.A. Send To: Bushnell Outdoor Products Attn.: Repairs 8500 Marshall Drive Lenexa, Kansas 66214 IN CANADA Send To: Bushnell Outdoor Products Attn.: Repairs 25A East Pearce Street, Unit 1 Richmond Hill, Ontario L4B 2M9

2006 Bushnell Outdoor Products


Instruction Manual



Model # 743333
The Bushnell Professional Boresighter is an essential tool for quickly adjusting scope or iron sights to align with the rie or handgun barrel. Correct use of your Boresighter will put sighting-in test shots on the paper, requiring only minor expenditure of time and ammunition by test ring to achieve pin-point zero at a given distance. Because of the many variables involved in both ammunition and the rearm itself, nal sighting in must be done by actual ring. After sighting in by ring, reinstall the Boresighter in the muzzle of your gun and note the position of your scope reticle on the grid of the Boresighter. Make a record of this position for later use in checking the sighting in the eld. Be sure to note the ammunition that was used. On the hunt, the Boresighter is an invaluable aid for making sure that your rie remains accurately sighted when test shots would frighten the game for miles around! In the shop it is ideal for checking stock bedding for sensitivity to barrel pressure.


Graduated Grid Sighting Reticle-each graduation is equivalent to 4 inches at 100 yards.
Diameter of Front Lens Length of Body Weight
1-1/2 inches 4-7/8 inches 6-1/2 ounces
Pro Boresighter Kit 743333-1LIM.indd 1

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Professional Boresighter Kit Model# Arbor Deluxe Kit Model# 744001
.50 Cal to 12 Gauge Expandable Arbor Model# 740012
Optional Accessory Arbors (available through your Bushnell dealer):
Note that the unique expandable arbors included with the Professional Boresighter Kit provide exceptional exibility that is ideal for most owners of multiple rearms. With only three arbors, the user can bore sight a wide range- from.22 to.45 caliber. 15 Arbor Deluxe Kit (Model # 744001) Gunsmith quality with 15 assorted arbors for total versatility Arbors include:.177,.22, 6mm,.25, 6.5mm,.27, 7mm,.30,.32,.338,.35,.375,.44,.45, and.50.50 Caliber to 12 Gauge Expandable Arbor (Model # 740012) Just the accessory for the shotgunner or muzzleloader shooter. Fits Professional and Deluxe boresighters.
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HOW TO INSERT THE EXPANDABLE ARBOR INTO THE GUN BARREL Place the gun with mounted scope into a suitable support. Select the proper arbor and make sure the expandable tips are completely closed by turning the arbors locking nut (A Fig. 1,2) counter-clockwise until the tips contract. Insert the small end of the arbor into the Boresighter mount with the at area down, so that the end of the clamp screw (B Fig. 1) will bear against the at surface. Turn the screw clockwise until it is ngertight. Now, with the Boresighter in an upright position, insert the arbor into the barrel and push it forward carefully until the muzzle rests against the tapered section of the arbor (Fig. 2). With the arbor locking nut loosened, and while looking through the scope, swing the Boresighter to align vertical grid lines with the scope reticle. Turn the arbor locking nut clockwise until the arbor holds rmly to the bore; the expandable tips prevent the Boresighter from turning of its own weight. NOTE: To remove the arbor from the barrel, simply loosen the arbor locking nut (Fig. 1), push inward to retract the tips, and pull the unit from the barrel.
Pro Boresighter Kit 743333-1LIM.indd 3

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HOW TO BORE SIGHT A SCOPE-MOUNTED RIFLE OR HANDGUN Scope/Rie Combination Once you have secured the Boresighter, place the rie on a suitable support. Remove the adjustment caps from your riescope. Then sight through the riescope and align the reticle with the crosshairs of the graduated grid reticle in the Boresighter by using the riescopes elevation and windage adjustments. Once you have aligned the riescope reticle with the graduated grid reticle in the Boresighter, you are ready for sighting-in on the range. If bore sighting has been done properly, sighting-in should take a minimum of time and ammunition. After sighting-in, dont forget to reinstall the Boresighter and record the reticle position (see pg. 1). Scope/Handgun Combination Once you have secured the Boresighter to the barrel, place the handgun on a suitable support. Remove the adjustment caps from the scope. Sight through the scope and align the crosshairs with the crosshairs in the Boresighter using the scopes elevation and windage adjustments. Once you have aligned the scope crosshairs with those of the Boresighter, your handgun is ready for sighting-in on the range. How to Bore Sight a Rie or Handgun with Iron Sights Once you have secured the Boresighter to the barrel, place the handgun or rie on a suitable support. Viewing through the rear sight, adjust the sights to align with the crosshairs on the graduated grid reticle in the Boresighter. When you have completed bore sighting, the handgun or rie is ready for sighting-in on the range. How to Make Corrections for Bullet Drop Using the scope adjustments, you can make correction for bullet drop at a specic distance provided the trajectory of the specic load is known. Each graduation on the Boresighter grid is equivalent to 4 inches at 100 yards. When the scope reticle is below the grid center, the gun will shoot high.



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