Vortex Optics RAZOR HD 5-20X50 RIFLESCOPE — First Focal Plane - Manual (Page 4)

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Riflescope Adjustments
Vortex 5–20x50 Razor riflescopes incorporate precision
finger adjustable elevation and windage knobs with audible
and tactile clicks.
Windage and Elevation Adjustments
Depending on which version you have purchased, your Razor
5–20x50 riflescope will feature adjustments scaled in MOAs
or mrads. If you are unsure of which scale is used, reference
the top of the adjustment turret.
1. Turn the adjustment
knob in the appropriate
direction: Up/Down or
Left/Right as indicated by
the arrows.
2. Move the knobs in the
direction you wish the
bullet’s point-of-impact to
change.
To make adjustments:
If the adjustment is in MOAs,
the turret will display
“1 Click = ¼ MOA”.
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If the adjustment is in mrads,
the turret will display
“1 click = 1/10 mrad”.
Most shooters are familiar with the minute–of-angle (MOA)
system commonly used in hunting riflescopes. MOA
measurements are based on degrees and minutes: 360 degrees
in a circle, 60 minutes in a degree, for a total of 21,600. When
comparing MOAs and mrads, 3.44 MOAs are equal to 1
mrad. These angular measurements are used for ranging and
correcting for the bullet’s trajectory drop in riflescopes.
Each click will move the point-of-impact 1/4 MOA. 1/4 MOA
closely corresponds to .26 inches at 100 yards, .52 inches at
200 yards, .78 inches at 300 yards, etc.
Example: At a 100 yard sight-in distance, it will take four clicks
of the knob to move a bullet’s point-of-impact 1.05 inches.
The milliradian (mrad for short) is a form of angular
measurement similar in concept to a degree although much
finer. A degree is 1/360 of a circle; a milliradian is 1/6283 of
a circle.
Each click will move the point-of-impact 1/10 mrad. 1/10
mrad equals .36 inches at 100 yards (1 cm at 100 meters),
.72 inches at 200 yards (2 cm at 200 meters), 1.08 inches at
300 yards (3 cm at 300 meters), etc.
MOA Adjustments
MRAD Adjustments
Example: At a 100 yard sight-in distance, four clicks will move
the bullet’s point-of-impact 1.44 inches. At 100 meters, four
clicks will move the point-of-impact four centimeters.
Windage
Adjustment Knob
Elevation
Adjustment Knob