Operation Manual

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Maintenance
The fully waterproof and fogproof Vortex Viper PST
riflescope 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.
Cleaning
• Be sure to blow away any dust or grit on the lenses
prior to wiping the surfaces.
• Using your breath, or a very small amount of water or
pure alcohol, can help remove stubborn things like dried
water spots.
All components of the Vortex Viper PST riflescopes are
permanently lubricated, so no additional lubricant should be
applied.
Lubrication
When cleaning the lenses, be sure to use products, such as
the Vortex Fog Free cleaning products or Lens Pen, that are
specifically designed for use on coated optical lenses.
Note: Other than to remove the turret caps, do not attempt to
disassemble any components of the rifl escope. Disassembling of
rifl escope may void warranty.
If possible, avoid exposing your Vortex riflescope to direct
sunlight or any very hot location for long periods of time.
Storage
Troubleshooting
Many times, problems thought to be with the scope are actually
mount problems. Be sure the mounts are tight to the rifle and
the scope is secured so it doesn’t twist or move in the rings.
An insufficient windage or elevation adjustment range may
indicate problems with the base mount, base mount holes drilled
in the rifle’s receiver, or barrel/receiver alignment.
Check for Correct Base and Ring Alignment
1. Re-center the scope reticle (see Centering of the Reticle).
2. Attach bore sighter, or remove bolt and visually boresight rifle.
3. Look through the scope. If the reticle appears way off center
on the boresighter image or when compared to the visually
centered target when looking through rifle’s bore, there may
be a problem with the bases or rings being used. Confirm
that correct base and rings are being used—and in the proper
orientation.
There are many issues that can cause poor bullet grouping.
Grouping Problems
• Maintain a good shooting technique and use a solid rest.
• Check that all screws on rifle’s action are properly tightened.
• Be sure rifle barrel and action are clean and free of excessive
oil or copper fouling.
• Check that rings are correctly torqued per the manufacturer’s
instructions.
• Some rifles and ammunition don’t work well together—try
different ammunition and see if accuracy improves.
Sighting-in Problems