Bushnell HOLOsight 510023 Instruction Manual page 6

3. Brightness Adjustment
Push-button switches vary the brightness intensity of the holographic reticle pattern. Depressing
and releasing the push-button switches moves the brightness level UP or DOWN one (1) step
from the previous setting. Depressing and holding the up arrow or down arrow switch will
change brightness level up or down continuously in steps. There are twenty (20) brightness
settings providing a dynamic range of 20,000:1 from the lowest setting to the highest setting.
When the sight is turned ON, the brightness intensity level is automatically returned to the last
level used.
4. Auto Shutdown
The BUSHNELL HOLOsight is equipped with auto shutdown capability and will automatically
shut itself OFF 8 hours after the last push-button control is used.
MOUNTING
The BUSHNELL HOLOsight is equipped with mounting hardware to attach to a standard 1" dovetail
or Weaver® style rail. To achieve the best results and accuracy, the BUSHNELL HOLOsight must be
mounted properly. The 1" dovetail rail needs to be as parallel as possible to the bore to achieve the best
accuracy. We strongly recommend you have the dovetail rail installed by a qualified gunsmith. Should
you decide to install the mount and sight yourself, please follow these steps:
1. Use a high-quality 1" steel dovetail rail mount designed to fit your particular firearm.
2. Carefully follow the instructions packed with the dovetail rail mount you have selected. Pay
careful attention to aligning the dovetail base parallel to the bore of the firearm.
3. The dovetail base should be mounted as low as possible.
4. Locate the post and dovetail clamp on the underside of the sight. Loosen the hex nut retainer
screw and the dovetail clamp with an Allen wrench (7/64).
5. Place the post within a groove on the top of the 1" dovetail base. Individual preference and the
specific firearm determines the optimal positioning to any specific groove on the dovetail base.
6. Make sure the post is inserted fully into the mount's groove and push the sight as far forward as
possible. Tighten hex nut and retainer screw.
NOTE: Loosen screw just enough to mount and dis-mount the sight. Do not back screw out
completely to avoid losing the Weaver lock hardware.
BORE SIGHTING AND ZEROING
Bore sighting is a good preliminary procedure in achieving proper alignment of your sight to the
firearm. If the 1" dovetail rail is not mounted parallel to the barrel, major elevation adjustments may
be accomplished by shimming the dovetail base. It is important not to use the elevation adjustment
of the sight for major adjustments. Your sight's internal elevation and windage adjustments should
be reserved for fine-tuning to achieve zero at the called for distance. Final zeroing of your firearm
and sight should be done with live ammunition and based on your expected shooting distance. If
you anticipate most of your shooting at short range, zero in at 50 yards. Groups of three shots will
be useful for averaging the point of impact.
WINDAGE AND ELEVATION ADJUSTMENTS
Your BUSHNELL HOLOsight features click mechanisms for elevation and windage adjustments.
The elevation and windage adjustment are located on the right-hand side of the sight (Figure 1). The
knob towards the front is your windage adjustment and the knob towards the rear is your elevation
adjustment (Figure 1). Both of these adjustment mechanisms are grooved with a slotted screw head
and require the use of a screwdriver, coin, or spent brass to turn.
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2008 Holosight 510023+510023AP 6LIM rev3.indd 6 2/27/2008 11:07:21 AM