Vortex Optics VIPER HS-T 6-24X50 RIFLESCOPE - Manual (Page 5)

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HS-T
RIFLESCOPE
Customizable Rotational Stop (CRS)
Viper HS-T riflescope elevation turrets incorporate the unique CRS
rotation stop feature. After the rifle is sighted in, the design of the
CRS allows a shooter to quickly and easily return to an original zero
point when using the elevation turret to dial-in temporary bullet drop
corrections.
The CRS feature is particularly useful when dialing large multi-
revolution elevation corrections. Without this feature, the shooter
must pay very careful attention when dialing these large corrections.
If the shooter loses track of the number of revolutions, the original
zero point may become lost when returning the adjustment.
The
CRS allows the elevation dial to be quickly spun back to original zero
without having to carefully count revolutions or clicks.
Once the CRS shims are installed after sight-in, the elevation dial will
stop turning shortly past the original zero point when being returned
(turning clockwise direction) from a temporary elevation adjustment.
The shooter can then turn the elevation knob a partial turn in a
counter-clockwise direction until the zero reference and radius bar are
correctly aligned—achieving the original zero point.
See CRS shim installation in the
Bore Sighting and Final Range
Sight-in sections.
CRS Shims
Turret Rotation
The Viper HS-T riflescope incorporates Vortex’s patented Radius Bar
to visually assist in keeping track of turret rotations. The Radius Bar
provides a quick visual
reference that allows the
shooter to confirm:
• Knob orientation is
correct and has not shifted
as a result of accidental
contact.
• Knob orientation is at
the zero point when using
the CRS feature.
• By watching the position
of the bar while making elevation adjustments, the shooter is able to
quickly track full, half and quarter rotations.
To get these benefits from the Radius Bar, the “0” mark on the turret
must be indexed with the zero reference line on turret post (see Setting
the CRS Stop and Indexing Elevation Knob section on page 14).
Zero Reference Lines
Radius Bar
Turret Cap
Retaining
Screw