Vortex Optics CROSSFIRE 4-16X50 AO - MIL DOT ILLUMINATED User Manual

Reticle Manual

Mil Dot

Vortex Mil Dot Reticle

The Vortex Mil Dot reticle is an extremely versatile reticle allowing
the user to do range estimations, holdover and wind drift
compensation, as well as moving target leads.

Vortex M il Dot Reticl e

When used with second focal plane riflescopes it is very important
to understand that in order to use the listed subtensions
correctly, the scope must be set to a particular magnification
(usually the highest). Consult the riflescope owner’s manual for
the correct magnification to be used. Of course, the standard
center crosshair can always be used at any magnification.

The mil dot reticle subtensions are based on the milliradian
(mrad for short). Mrad unit of arc measurements are based on
the radian. A radian is the angle subtended at the center of a
circle by an arc that is equal in length to the radius of the circle.
These angles and arc scales are used to estimate range and bullet
trajectory drop with
the mil dot reticle.
There are 6.283
radians in a circle and
1000 milliradians in
a radian for a total
of 6283 milliradians
(mrads) in a circle.

1 Mil Widt h at Distanc es

100 yards ------------------------ 3.6 inches
200 yards ------------------------ 7.2 inches
300 yards ----------------------- 10.8 inches
400 yards ----------------------- 14.4 inches
500 yards ----------------------- 18.0 inches
600 yards ----------------------- 21.6 inches
700 yards ----------------------- 25.2 inches
800 yards ----------------------- 28.8 inches

An mrad will subtend

3.6 inches at a distance of 100 yards. Most riflescopes with mrad
adjustments use .1 mrad clicks which subtend .36 inches at 100
yards.

Vortex M il Dot reticl e
subtensions shown in milliradians
(mrad or mils).

1