Vortex Optics VIPER XBR 2.5-10X44 CROSSBOW SCOPE User Manual

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Arrow Drop Correction Using the Elevation Turret

Using the elevation turret to adjust for arrow drop is slightly slower
than using the reticle, and also entails some hand motion which could
spook game. The advantage to making a turret adjustment is that it is
not sensitive to the scope’s magnification and can be successfully used
at any magnification. Simply turn the turret in the up direction the
number of MOAs indicated on your drop chart, then shoot using the
center crosshair.

Be aware that available turret travel up range may be limited by the
alignment of the crossbow’s scope mounting rail. Most rails should
allow at least 50 MOAs of available up travel when using the XBR’s
elevation turret. If necessary, turret MOAs and reticle MOAs can be
combined to achieve the required drop correction for very long shots.

Once you build your MOA drop chart, it is also possible to etch or
tape a custom elevation turret marked in yards rather than MOAs. A
yardage-marked turret allows quick adjustment in the field without
needing to consult the MOA drop chart. If you are interested in doing
this, please feel free to call our office at (800) 426-0048 or e-mail
[email protected] for options and assistance.

Consider adding a custom
elevation turret marked in yards
rather than MOAs.

AinTenAnCe

Cleaning

The fully waterproof and fogproof Viper XBR scope requires very little
routine maintenance other than periodically cleaning the exterior
lenses. The exterior of the scope may be cleaned by wiping with a soft,
dry cloth.

When cleaning the lenses, be sure to use products that are specifically
designed for use on coated optical lenses such as the Vortex Fog Free
cleaning products or LensPen.

• Be sure to blow away any dust or grit on the lenses prior to wiping
the surfaces.

• Use your breath, or a very small amount of water, to remove dried
water spots. Pure alcohol can help remove marks like fingerprints.

Lubrication

All components of the Viper XBR scope are permanently lubricated, so
no additional lubricant should be applied.

Note: Other than removing the turret caps, do not attempt to
disassemble any components of the scope. Disassembling the scope
may void the warranty.

Storage

If possible, avoid storing your scope in direct sunlight or any very hot
location for long periods of time.