Vortex Optics VIPER HS 4-16X44 LR RIFLESCOPE - Manual (Page 7)

HS LR
RIFLESCO PE
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. Sight in and zero the riflescope at the preferred
distance using the exact ammunition expected to be used while shooting.
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 on page 5) and set the
side focus adjustment to match the distance being used for sight-in:
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 Adjustments 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.
This procedure can be repeated as many times as necessary to achieve a
perfect zero.
Visually bore-sighting a rifle.
Bore Sighting
Initial bore sighting of the riflescope will save time and money at the range.
This can be done in a number of ways. A mechanical or laser bore sighter
can be used according to the manufacturer’s instructions. On some rifles,
bore sighting can be done by removing the bolt and sighting through the
barrel.
• Place the rifle solidly on a rest and remove the bolt.
• Sight through the bore at a target approximately 100 yards away.
• Move the rifle and rest until the target is visually centered inside the
barrel.
• 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:
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