User Manual

11 10
RIFLESCOPE
Final Range Sight-In
After the riflescope has been bore-sighted, final sight-in should be done at
the range using the exact ammunition expected to be used while shooting.
Sight in and zero the riflescope at the preferred distance—usually 50 or
100 yards.
Be sure the reticle is in focus (see Reticle Focus section on page 4) and set
the parallax adjustment to match the distance being used for sight-in:
This procedure can be repeated as many times as necessary to achieve
a perfect zero.
• Following all safe shooting practices, fire a three-shot group as
precisely as possible.
• Next, adjust the reticle to match the approximate center of the shot
group (see Windage and Elevation Adjustment section on page 5).
Note: If the rifle is very solidly mounted and cannot be moved, simply look
through the scope and adjust the reticle until it is centered on the fired group.
• Carefully fire another three-shot group and see if the bullet group is
centered on the bullseye.
Resetting Adjustment Dials with Zero Reset
Viper PST riflescopes feature windage/elevation dials that will allow
you to re-index the zero indicator after sight-in without disturbing
your settings. This allows you to quickly return to your original zero
if temporary corrections are used in the field. Reset the windage and
elevation dials in this way:
1. Remove the outer cap and pull the
adjustment dial outward against the spring
tension until it stops.
2. With the dial pulled fully outwards,
rotate the dial to reposition the zero mark
on the index line.
3. Release the dial, allowing it to return to the normal inward position.
4. Reinstall the outer cap.
Grasp turret dial, pull
upward and rotate
until the etched zero
mark (arrow) aligns
with the indicator line
on scope body.
Remove the outer cap to
expose the turret dial.