Vortex Optics VIPER HS-T 6-24X50 RIFLESCOPE - Manual (Page 7)

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HS-T
RIFLESCOPE
Final Range Sight-In and CRS Stop Set
After the riflescope has been bore-sighted, final sight-in and CRS
stop set 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. 100 yards is the most common zero
distance, although a 200 yard zero may be preferred for long range
applications.
Be sure the reticle is in focus (see Reticle Focus section on page 5)
and adjust the side focus knob if present until the target image is
sharp and without parallax error (see Using the Side Focus section
on page 7).
This procedure can be repeated as many times as necessary to achieve
a perfect zero.
1. Following all safe shooting practices, fire a three-shot group as
precisely as possible.
2. Next, adjust the reticle to match the approximate center of the
shot group (see Windage and Elevation Adjustment section on
page 6).
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.
3. Carefully fire another three-shot group and see if the bullet
group is centered on the bullseye.
Bore Sighting
Initial bore sighting of the riflescope will save time and money at the
range. This can be done by using a mechanical or laser bore sighter
according to the manufacturer’s instructions or by removing the bolt
and sighting through the barrel on some rifles.
1. Place the rifle solidly on a rest and remove the bolt.
2. Sight through the bore at a target approximately 100 yards
away.
3. Move the rifle and rest until the target is visually centered
inside the barrel.
4. With the target centered in the bore, make windage and
elevation adjustments until the reticle crosshair is also centered
over the target.
To visually bore sight a rifle:
Visually bore-sighting a rifle.