Bore Sighter
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 New BSA Boresighter Kit 15 Piece 177 to 50 With Hard Case Free Shipping $36.50 Time Remaining: 13d 11h 59m Buy It Now for only: $36.50 |
 Center Point All In One Laser Boresighter with Universal Laser Flashlight Kit $41.77 (5 Bids) Time Remaining: 2h 38m |
 Bushnell Laser Bore Sighter 22 to 50 cal 12ga 20ga New in Package 74 0100C $22.50 (19 Bids) Time Remaining: 12h 44m |
 NEW BSA BORESIGHTER KIT OPTICS BS30 W STUDS CASE BS 30 $36.49 Time Remaining: 7d 20h 56m Buy It Now for only: $36.49 |
 Bushnell Rifle Laser Bore Sight BoresighterFREE SH $23.02 (9 Bids) Time Remaining: 8h 10m |
 BSA boresighter BS30 30MM with 15 studs and hard case $17.52 (5 Bids) Time Remaining: 14h 7m |
 Bushnell Laser Bore Sighter 22 to 50 cal 12ga 20ga New in Package 74 0100C $32.99 Time Remaining: 15d 22h 1m Buy It Now for only: $32.99 |
 Center Point All In One Laser Boresighter $25.50 (14 Bids) Time Remaining: 2d 26m |
 Bushnell Laser Boresighter Bore Sight 22 to 50 12ga 20 ga 74 0100C $32.48 Time Remaining: 15d 8h 28m Buy It Now for only: $32.48 |
 Bushnell Laser Bore Sighter 22 to 50 cal 12ga 20ga New in Package 74 0100C $21.50 (32 Bids) Time Remaining: 1d 12h 51m |
 Red Dot Laser Bore Sight 22 50 Caliber Rifle Gauge Sighter Boresighter New $10.49 (3 Bids) Time Remaining: 11h 50m |
 laser bore sighter 22 to 50 caliber hunting boresighter rifle scope boresight $17.99 Time Remaining: 25d 21h 27m Buy It Now for only: $17.99 |
 Bushnell Laser Boresighter $10.50 (2 Bids) Time Remaining: 4d 22m |
 Rare Bushnell Bore Sighter No H23933 with case and strap Japan $8.99 Time Remaining: 4h 26m |
 Bushnell 740100C Laser Boresighter Includes Arbors 22 50 12ga 20ga $34.50 Time Remaining: 13d 8h 47m Buy It Now for only: $34.50 |
 13pc Laser Bore Sighter Boresighter Kit LOOK AT ME $10.51 (3 Bids) Time Remaining: 4d 6h 41m |
 Sightmark SM39001 223 Remington 556 NATO Red Laser Bore Sight Sighter NEW $30.95 Time Remaining: 9d 7h 43m Buy It Now for only: $30.95 |
 Tasco 30 35E Shot Saver Boresighter $10.77 (4 Bids) Time Remaining: 10h 14m Buy It Now for only: $50.00 |
 Bushnell Laser Bore Sighter 22 to 50 cal 12ga 20ga New in Package 74 0100C $14.50 (5 Bids) Time Remaining: 5d 12h 8m |
 223 REM Cartridge Red Laser Bore Sighter Boresight Newly $18.95 Time Remaining: 3d 12h 4m Buy It Now for only: $18.95 |
 Leupold Zero Point Boresighter $102.50 (13 Bids) Time Remaining: 2d 27m |
 50 Caliber Laser Bore Sighter BMG Free Expedited Shipping from USA $17.99 Time Remaining: 3h 40m Buy It Now for only: $19.99 |
 Sightmark SM39005 243 308 Winchester 762x51 Laser Bore Sight Sighter NEW $30.95 Time Remaining: 12d 12h 36m Buy It Now for only: $30.95 |
 30 30 Winchester Laser Bore Sighter Free Expedited Shipping from USA $17.99 Time Remaining: 3h 41m Buy It Now for only: $19.99 |
 NEW BSA BORESIGHTER KIT OPTICS BS30 W STUDS CASE BS 30 $28.95 Time Remaining: 2d 49m Buy It Now for only: $28.95 |
 Tasco 30 35E Shot Saver Boresighter $17.50 (6 Bids) Time Remaining: 2d 6h 55m |
 Lenzar Boresighter $3.25 (3 Bids) Time Remaining: 3d 2h 24m |
 45ACP 45 New Pistol Cartridge Red Laser Bore Sighter Boresight $18.95 Time Remaining: 2d 15h 16m Buy It Now for only: $18.95 |
 Center Point All in One Laser Boresighter $13.00 (8 Bids) Time Remaining: 3d 5h 27m |
 45ACP 45 Pistol Cartidge Laser Bore Sighter Boresight $17.91 Time Remaining: 7d 7h 49m Buy It Now for only: $17.91 |
 SIGHTMARK 44 MAGNUM LASER CARTRIDGE BORE SIGHT BORESIGHTER NEW $26.95 Time Remaining: 1d 7h 57m |
 SIGHTMARK 45 ACP LASER CARTRIDGE BORE SIGHT BORESIGHTER NEW $26.95 Time Remaining: 1d 7h 57m |
 New Red Dot Laser Bore Sighter boresighter Kit 22 50 Caliber Rifle Scope $19.79 Time Remaining: 6d 22h 44m Buy It Now for only: $19.79 |
 SIGHTMARK 357 MAGNUM 38 SPECIAL LASER CARTRIDGE BORE SIGHT BORESIGHTER NEW $26.95 Time Remaining: 1d 7h 57m |
 Bushnell Laser Boresighter for Handguns Rifles Shotguns 74 0100C $27.50 (12 Bids) Time Remaining: 1d 14h 57m |
 New 9MM Catridge Laser Bore Sight Laser boresighter $25.75 Time Remaining: 29d 17h 52m Buy It Now for only: $25.75 |
 Red Dot Aiming Laser Bore Sighter 22 50 Caliber Rifle Gauge Boresighter $9.46 Time Remaining: 11h 34m |
 LaserLyte Mini Red Laser Bore Sight 22 50cal Caliber MBS 1 Boresighter $49.29 Time Remaining: 6d 8h 54m Buy It Now for only: $49.29 |
 New Boresighter RED laser bore sighter 22 50 caliber Includes Tools Batteries $5.50 (3 Bids) Time Remaining: 5d 10h 19m |
 New Boresighter RED laser bore sighter 22 50 caliber Includes Tools Batteries $10.50 (4 Bids) Time Remaining: 2d 10h 1m |
 Sightmark SM39016 40 SW Red Laser Bore Sight Sighter NEW $29.95 Time Remaining: 9d 8h 11m Buy It Now for only: $29.95 |
 Bushnell Rifle Laser Shooting Bore Sight Boresighter $32.95 Time Remaining: 3d 10h 1m |
 Red Dot Laser Bore Sight 22 50 Caliber Rifle Gauge Sighter Bore sighter $9.99 (1 Bid) Time Remaining: 1d 13h 1m |
 Red Laser Bore Sighter 38 38 Special Cartridge Pistol Caliber $18.95 Time Remaining: 14d 13h 58m Buy It Now for only: $18.95 |
 LaserLyte Mini Laser Bore Sighter 22 50 Cal MBS 1 $57.00 Time Remaining: 12h 12m |
 223 556 NATO laser bore sighter 223 REM Laser Bore Sight $22.75 Time Remaining: 10d 5h 47m Buy It Now for only: $22.75 |
 BSA Bore Sighter $26.00 (3 Bids) Time Remaining: 4d 7h 16m |
 BSA Boresighter System Model BS30 Used to sight in your scope $10.00 (1 Bid) Time Remaining: 3d 38m |
 red dot laser bore sighter 22 to50 caliber rifle boresight $19.99 Time Remaining: 1d 1h 43m Buy It Now for only: $19.99 |
 Bushnell Laser Boresighter for Handguns Rifles Shotguns 74 0100C $15.50 (11 Bids) Time Remaining: 3d 14h 54m |
 308 243 Cartridge Laser Bore Sighter Laser Bore Sight $21.99 Time Remaining: 27d 18h 44m Buy It Now for only: $21.99 |
 CAL 300WIN Laser Boresighter Bore Sight Aluminum Red Dot Solid Metal $9.95 Time Remaining: 11h 43m |
 100 good quality 650nm KO laser bore sighter 22 to 50 caliber red dot sight $7.95 Time Remaining: 13h 55m |
 New Bushnell 22 50 Caliber 5 Arbors Lightweight Laser Boresighter 740100C $26.95 Time Remaining: 23d 8h 15m Buy It Now for only: $26.95 |
 Bushnell 74 3002 Professional Bore Sighter 1980 Model $9.99 (1 Bid) Time Remaining: 2d 4h 40m |
 Bushnell Universal Laser Boresighter 22 to 50 Caliber 20 12 Gauge 740100C $39.53 (14 Bids) Time Remaining: 1d 2h 48m |
 new 223 REM CARTRIAGE LASER BORE SIGHTER $19.95 Time Remaining: 13d 10h 48m Buy It Now for only: $19.95 |
 New Quality 650nm Green Dot KO laser bore sighter 22 to 50 caliber $16.95 Time Remaining: 1d 13h 38m |
 556 NATO 223 Cartridge Laser Boresighter free shipping $22.75 Time Remaining: 13d 16h 1m Buy It Now for only: $22.75 |
 New Quality 650nm Green Dot KO laser bore sighter 22 to 50 caliber $16.95 Time Remaining: 1d 16h 32m |
 100 good quality 650nm KO laser bore sighter 22 to 50 caliber red dot sight $7.95 Time Remaining: 1d 35m |
 Sightmark SM39021 22 LR Red Laser Bore Sight Sighter NEW $45.00 Time Remaining: 9d 7h 36m Buy It Now for only: $45.00 |
 High Accuracy CAL 30 06 25 06 Cartridge Laser Bore Sighter Boresight Red Dot $9.99 Time Remaining: 11h 43m |
 CAL 30 30 WIN Laser Boresighter Bore Sight Aluminum Red Dot Solid Metal $9.45 Time Remaining: 1d 12h 48m |
 308 WIN Laser Cartridge Bore Sighter 243 Cartridge Laser Bore Sight $19.95 Time Remaining: 20d 18h 54m Buy It Now for only: $19.95 |
 NEW Boresighter Laser Cartridge 12 Gauge caliber $0.99 Time Remaining: 1d 13h 49m |
 308 243 Cartridge Laser Bore Sighter 243 308 Laser Bore Sight $21.50 Time Remaining: 24d 15h 50m Buy It Now for only: $21.50 |
 LaserLyte Mini Laser Bore Sighter 22 50 Cal MBS 1 $57.00 Time Remaining: 2d 12h 12m |
 US Currency 650nm KO laser bore sighter 22 to 50 caliber red dot sight $7.99 Time Remaining: 1d 18h 47m |
 Sightmark SM39015 9mm Luger Red Laser Bore Sight Sighter NEW $29.95 Time Remaining: 9d 9h 7m Buy It Now for only: $29.95 |
 High Accuracy Laser Bore Sight CAL 12 Gauge Sighter Bore sighter Solid metal $9.50 Time Remaining: 11h 50m |
 High Accuracy CAL 300WIN Laser Boresighter Bore Sight Aluminum T Red Dot Gun $9.99 Time Remaining: 1d 12h 48m |
 Sightmark SM39014 17 to 50 BMG Universal Laser Bore Sight Sighter NEW $35.00 Time Remaining: 19d 6h 20m Buy It Now for only: $35.00 |
 SGA 12 SHOTGUN ADAPTER KIT FOR SL 50 LASER BORESIGHTER SYSTEM VERY NICE $0.99 Time Remaining: 4d 10h 20m |
 LASER BORE SIGHTER SCOPE 22 TO 50 RIFLE SIGHT RED DOT BORESIGHTER $19.95 Time Remaining: 6d 22h 44m Buy It Now for only: $19.95 |
 Gun Rifle Shotgun Laser Shooting Bore Sight Boresighter Fits All Calibers NEW $44.95 Time Remaining: 6d 10h 28m |
 CAL 76239MM Laser Boresighter Bore Sight Aluminum Red Dot High Accuracy $9.22 Time Remaining: 1d 12h 48m |
 12 Gauge Cartridge Laser Bore Sighter Boresight 12GA $18.95 Time Remaining: 2d 12h 17m Buy It Now for only: $18.95 |
 Accuracy Green DOT laser bore sighter 22 to 50 caliber boresighter Free Ship $36.99 Time Remaining: 2d 14h 47m |
 Sightmark SM39002 762x39 Russian SKS Red Laser Bore Sight Sighter NEW $29.95 Time Remaining: 9d 9h Buy It Now for only: $29.95 |
 CAL 243 308WIN 7MM 08REM Laser Boresighter Bore Sight Aluminum T Red Dot $9.96 Time Remaining: 1d 12h 49m |
 CAL 30 30 WIN Laser Boresighter Bore Sight Aluminum Red Dot High Accuracy $9.36 Time Remaining: 2d 11h 28m |
 NEW Drop In Laser Boresighter Fits FNAR FN SCAR SR556 $25.00 Time Remaining: 29d 11h 54m Buy It Now for only: $25.00 |
 CAL 30 06 25 06 Cartridge Laser Bore Sighter Boresight HT Dot Solid Aluminum $8.90 Time Remaining: 1d 12h 48m |
 CONCEPT DEVELOPMEMT CORP SL 50 LASER BORESIGHTER SYSTEM VERY NICE $20.50 (4 Bids) Time Remaining: 4d 10h 25m |
 NCSTAR 223 CARTRIDGE LASER BORE SIGHTER MODEL TLZ223 $19.99 Time Remaining: 29d 2h 45m Buy It Now for only: $19.99 |
 New Quality 650nm Green Dot KO laser bore sighter 22 to 50 caliber $16.95 Time Remaining: 3d 16h 29m |
 30 06 25 06 and 270 Laser Cartridge Bore Sighter 270 $21.75 Time Remaining: 12d 15h 21m Buy It Now for only: $21.75 |
 CAL 223 Rem Gauge Laser Bore Sighter Boresight Red Dot Solid metal For Shotgun $9.98 Time Remaining: 1d 12h 48m |
 CAL 243 308WIN 7MM 08REM Laser Boresighter Bore Sight Red Dot for Hunting $9.99 Time Remaining: 2d 11h 28m |
 BSA BORESIGHTER KIT OPTICS BS30 W STUDS CASE BS 30 BRAND NEW $39.88 Time Remaining: 19d 10h 10m Buy It Now for only: $39.88 |
 AR 223 LASER CARTRIDGE BORESIGHTER BORE SIGHT $19.95 Time Remaining: 1d 7h 56m |
 NEW Boresighter Laser Cartridge 93x62mm 93x62 Mauser caliber $1.57 Time Remaining: 1d 7h 16m |
 red dot laser bore sighter 22 to50 caliber $26.99 Time Remaining: 27d 7h 45m Buy It Now for only: $26.99 |
 NEW Boresighter Laser Cartridge 30 06 762x63mm caliber $0.99 Time Remaining: 1d 13h 49m |
 NEW Bushnell Laser Boresighter 2DaysShip $33.99 Time Remaining: 4d 1h 48m Buy It Now for only: $33.99 |
 CAL 76239MM Laser Boresighter Bore Sight Aluminum Red Dot with Cell Batteries $9.23 Time Remaining: 2d 11h 28m |
 US Currency 650nm KO laser bore sighter 22 to 50 caliber red dot sight $7.99 Time Remaining: 3d 16h 51m |
 CAL 30 30 WIN cartridge bore sighter red dot laser boresighter sighting sites $14.99 Time Remaining: 9d 20h 23m Buy It Now for only: $14.99 |
 CAL 223 Rem 556 NATO Laser Bore Sighter Boresight Red Dot Bass Shotgun $12.50 (17 Bids) Time Remaining: 1d 15h |
Bore Sighter
Boresight by qilei
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (April 2008)
Boresight is the optical axis of a directional antenna.
Boresight is also a term used to describe crude adjustments made to an optical firearm sight, or iron sights, to align the firearm barrel and sights. This method is usually used to pre-align the sights, which makes zeroing (zero drop at XX distance) much faster.
Traditional boresighting, as the name suggests involves removing the bolt and sighting down the bore of a gun to a fixed point. While the rifle is fixed in place, the scope or irons can then be adjusted to also aim at the distant object. A more modern method of boresighting is to use a laser to illuminate the distant point, rather than by visual inspection. This method is preferable because it allows more movement in the gun, as the laser dot will not move relative to the barrel, and is a method of boresighting which does not require the removal of the bolt.
A more advanced method of boresighting uses a collimator, an optic attachment similar to a scope sight, which fits onto the end of the barrel. Using this method, the normal sight (which is fixed to the stock) and the collimator (which is fixed to the barrel) can be sighted to match. Most collimators have grid patterns for rechecking the zero after the barrel is sighted.
As laser technology has become less expensive, laser bore sighters have become popular for sighting in rifles. One type of laser bore sight is inserted into the chamber, and projects a beam through the barrel onto the target. The user then adjusts the rifle scope until the crosshairs are on the laser dot. Another type of laser bore sighter is more universal, and is attached to the end of the barrel. It is held in alignment with the barrel and projects a laser beam onto the target. Again, the user aligns the crosshairs to the laser dot on the target.
No matter which method of bore sighting is used, the result is to align the crosshairs of the scope to the spot where the barrel is pointing at a particular distance. Because of variations in the trajectory of ammunition, as well as other factors, the bore-sighted rifle will probably not shoot to the exact spot that the crosshairs indicate, and live ammunition will need to be fired to fine-tune the sighting process.
Boresight is also a term used to describe the accurate alignment of avionic equipment in an airframe or other flight vehicle (e.g. head-up displays, inertial reference systems, guidance systems, radar and other sensor systems, weapon systems, etc.).
Accuracy is the measure of how well the sighted object is represented. It can be measured from a specific decisionmaking circumstance, like the orientation of notches of a gun barrel. Alternately, the device could be designed to accommodate a range of circumstances and still be sufficiently accurate. Heads-up displays are independent of eye position over a pre-set range, for example.
It may be by electronic offset adjustment or by physicalechanicallignment of the equipment mountings, allowing equipment replacement without re-boresighting, hence the term "line replacable unit". This concept is, among other things, instrumental in reducing many flight delays.
Boresight is also a term used to describe the angle where the sonar or other transmitter transducer is aimed straight.
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Rifle Accuracy Tips - Using A Laser Bore Sighter