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BORE SIGHTER Model # 743333 The Bushnell Professional Boresighter is an essential tool for quickly adjusting scope or iron sights to align with the rifle 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 firing to achieve pin-point zero at a given distance.
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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 arbor’s locking nut (Fig. 1/2: A) counter-clockwise until the tips contract.
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After “sighting-in”, don’t forget to reinstall the Boresighter and record the reticle position. (see grid below) 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 scope’s elevation and windage adjustments.
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Optional Accessory Arbors (available through your Bushnell dealer): Note that the unique expandable arbors included with the Professional Boresighter Kit provide exceptional flexibility that is ideal for most owners of multiple firearms. With only three arbors, the user can bore sight a wide range- from .22 to .45 caliber.
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