Vortex Optics VIPER HS-T 6-24X50 RIFLESCOPE User Manual
HS-T
RIFLESCOPE
rIFLESCOPE mANUAL
Second Focal Plane | MOA
HS-T
RIFLESCOPE
The VorTex®Viper®hS-TTm rifleScope
Specifically designed for the tactical, law enforcement and committed
TM
precision shooting communities, the Vortex®Viper®HS-T
offers the highest levels of performance and reliability. With features
such as matched turret/reticle subtensions, CRS zero stop mechanisms
and precision ranging reticles, the Viper HS-T is ready for any situation.
Fast Focus Eyepiece
Reticle Focus Ring
Magnification
Adjustment Ring
Windage Adjustment Knob
MagView
Radius Bar
Elevation Adjustment Knob
Side Focus Knob
riflescope
Dual Use: Shooting Tactical / Hunting
US Patent 7,937,879
Objective
Lens
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HS-T
RIFLESCOPE
reTicle opTionS
The Focal Plane
All riflescope reticles can be termed either first focal plane (FFP) or
second focal plane (SFP), depending upon their internal location within
the riflescope. This model features the second focal plane design.
Second Focal Plane Reticles
Second focal plane (SFP) reticles are located near the scope’s eyepiece
behind the image erecting and magnifying lenses. This style of reticle
does not visually change in size when you change the magnification.
The advantage of an SFP reticle is that it always maintains the same
ideally-sized appearance when shooting with this SFP scope. Be aware
that the listed reticle subtensions used for estimating range, holdover,
and wind drift correction are only accurate at the highest magnification.
Warning
Looking directly at the sun through a riflescope, or any optical instrument,
can cause severe and permanent damage to your eyesight.
rifleScope AdjuSTmenTS
Reticle Focus
The Viper HS-T riflescope uses a fast focus eyepiece designed to quickly
and easily adjust the focus on the riflescope’s reticle.
To adjust the reticle focus:
1. Look through the riflescope
at a blank white wall or up at
the sky.
2. Turn the eyepiece focus knob
in or out until the reticle image
is as crisp as possible.
Note: Try to make this particular adjustment quickly, as the eye will try to
compensate for an out-of-focus reticle.
Once this adjustment is complete, it will not be necessary to re-focus
every time you use the riflescope. However, because your eyesight may
change over time, you should re-check this adjustment periodically.
Variable Power Adjustments
To change the magnification,
turn the magnification ring to the
desired level. The Vortex fiber
optic magnification indicator will
provide a low light reference for
magnification level.
Adjust the reticle focus
Magnification
Scale
MagView
Indicator
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HS-T
RIFLESCOPE
Windage and Elevation Adjustments
The Viper HS-T riflescope incorporates precision finger adjustable elevation
and windage dials with audible clicks.
To make adjustments:
1. Turn the adjustment knob in the
appropriate direction: Up/Down or
Left/Right as indicated by the
arrows.
2. Following the directional arrows,
turn the knobs in the direction you
wish the bullet’s point-of-impact to
go to.
MOA Adjustments
This Viper HS-T riflescope uses finger-adjustable elevation and windage
turrets with scales measured in minutes of angle (MOA). MOAs are unit
of arc measurements which equal 1.05 inch for each 100 yards. Examples:
2.1 inches @ 200 yards, 3.15 inches @ 300 yards, etc.
Each click of the turret moves the point-of-impact .25 MOA for each 100
yards. For example, .25 MOA equals .26 inches at 100 yards, .52 inches at
200 yards, .78 inches at 300 yards, and so on.
Elevation
Knob
Windage Knob
Image Focus and Parallax Correction
The Viper HS-T riflescope features a side focus knob which should be used
to fine-tune the image focus. When the
image is sharply focused, parallax error
will also be eliminated.
Using the Side Focus
1. Be sure the reticle is correctly
focused (see Reticle Focus section on
page 5).
2. Turn the side focus knob until the
target image is as sharp as possible.
The yardage numbers referenced on knob should closely match the
actual yardage to the target.
3. Check for parallax error by moving your head back and forth
while looking through the scope. The focus is correct if there is no
apparent shift of the reticle on the target. If you notice any shift,
adjust the focus knob slightly until all shift is eliminated.
Parallax is a phenomenon that results when the target image
does not quite fall on the same optical plane as the reticle within
the scope. This can cause an apparent movement of the reticle
in relation to the target if the shooter’s eye is off-centered.
Correctly focusing the target image will allow it to fall on the
same optical plane as the reticle within the riflescope.
Turn Side Focus Knob
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