To Next PageTo Next Page
Need help?Do you have a question about the Bushnell 743333 and is the answer not in the manual?
Steps for bore sighting a rifle with a mounted scope, aligning reticles.
Steps for bore sighting a handgun with a mounted scope, aligning reticles.
Details of the 15-piece deluxe kit with assorted arbors for total versatility.
Specific arbor accessory for shotgunners and muzzleloader shooters.
Steps for bore sighting a rifle with a mounted scope, aligning reticles.
Steps for bore sighting a handgun with a mounted scope, aligning reticles.
Details of the 15-piece deluxe kit with assorted arbors for total versatility.
Specific arbor accessory for shotgunners and muzzleloader shooters.
The Bushnell Professional Boresighter (Model # 743333) is an essential tool designed for quickly adjusting scope or iron sights to align with a rifle or handgun barrel. Its primary function is to enable users to get "on the paper" with their initial sighting-in test shots, thereby minimizing the time and ammunition required to achieve pinpoint zero at a given distance through actual firing. While the boresighter provides a precise initial alignment, final sighting-in must always be accomplished by live firing due to the numerous variables inherent in ammunition and firearms.
The kit includes the boresighter unit itself, along with expandable arbors for various calibers. These unique expandable arbors offer exceptional flexibility, allowing the boresighter to be used with a wide range of firearms, typically from .22 to .45 caliber, with just three arbors. This versatility makes it ideal for owners of multiple firearms.
* Place the gun with a mounted scope on a suitable support.
* Select the appropriate arbor and ensure its expandable tips are fully contracted by turning the arbor's locking nut (A) counter-clockwise.
* Insert the small end of the arbor into the boresighter mount with the flat area facing down.
* Tighten the clamp screw (B) clockwise until it is fingertight, securing the arbor to the boresighter.
* With the boresighter in an upright position, carefully insert the arbor into the barrel until the muzzle rests against the tapered section of the arbor (Fig. 2).
* With the arbor locking nut loosened, look through the scope and swing the boresighter to align its vertical grid lines with the scope reticle.
* Turn the arbor locking nut clockwise until the arbor is firmly held in the bore, preventing the boresighter from turning under its own weight.
* To remove the arbor, simply loosen the arbor locking nut (A), push inward to retract the tips, and pull the unit from the barrel.
* Once the boresighter is secured in the barrel, place the firearm on a stable support.
* Remove the adjustment caps from the riflescope.
* Look through the riflescope and align its reticle with the crosshairs of the boresighter's graduated grid reticle using the riflescope's elevation and windage adjustments.
* After alignment, the firearm is ready for initial sighting-in at the range. Proper bore sighting should minimize the time and ammunition needed for final zeroing.
* Secure the boresighter to the barrel as described above.
* Place the firearm on a suitable support.
* Viewing through the rear sight, adjust the iron sights to align with the crosshairs on the boresighter's graduated grid reticle.
* Once aligned, the firearm is ready for sighting-in at the range.
* The graduated grid reticle allows for corrections for bullet drop, provided the trajectory of the specific ammunition load is known.
* Each graduation on the boresighter grid represents 4 inches at 100 yards.
* If the scope reticle is positioned below the grid center, the gun will shoot high. Adjustments can be made using the scope's elevation and windage controls to compensate.
Bushnell offers additional accessory arbors to further enhance the versatility of the Professional Boresighter:
The Bushnell Professional Boresighter is a robust and practical tool designed to streamline the process of sight alignment, saving time and ammunition for both casual shooters and serious enthusiasts.
General