Vortex OPMOD Strike Eagle AR-BDC User manual

Reticle Manual
1-6 x 24 AR-BDC | MOA

®
The AR-BDC Reticle
Our exclusive AR-BDC reticle facilitates rapid shooting at
distances from 20 to 600 yards with popular .223/5.56mm
and .308/7.62mm loads.
This versatile reticle can also be used effectively with a wide
variety of other firearms and loads using the Precision BDC
Technique outlined on page 4 of this manual.
AR-BDC Reticle
1
Dual Use: Shooting Tactical / Hunting Please read the entire manual before using your new optic.

2 3
Riflescope Adjustments
Using the Reticle for Bullet Drop Compensation
Standard BDC Technique
Most rifles will work well zeroed in at 50 yards using the center
crosshair. Consult the riflescope owner’s manual for sight-in
techniques. For most popular 5.56mm / .223 loads, the center
crosshair will then provide good accuracy from 20 to 200 yards.
For most popular 7.62mm / .308 loads, the center crosshair will
provide good accuracy from 20 to 150 yards.
At further distances, the lower hashmarks can be used as aiming
points at the corresponding aiming points listed on page 3.
Standard Bullet Drop for Popular
5.56 mm / .223 Loads
Main crosshair zeroed 50 yards, use from
20 to 200 yards:
Hashmark Distance
1st 300 Yards
2nd 400 Yards
3rd 500 Yards
4th 600 Yards
Standard Bullet Drop for Popular
7.62 mm / .308 Loads
Hashmark Distance
1st 230 Yards
2nd 330 Yards
3rd 440 Yards
4th 570 Yards
Note: It is important to understand that the drop hash marks
are designed to work with the riflescope set at the highest 6x
magnification. The main crosshair, and its corresponding zero
distance, can always be used at any magnification.
Main crosshair zeroed 50 yards, use from
20 to 150 yards:
20 - 200 yds.
300 yds.
400 yds.
500 yds.
600 yds.

4 5
Using the Reticle for Bullet Drop Compensation
Precision BDC Technique
If you wish to get the very best accuracy from the AR-BDC reticle
or work with loads and zeros other than those listed here, you can
custom match the exact ballistics of your particular load to the
drop hashmarks of the reticle using ballistic programs such as our
LRBC (Long Range Ballistics Calculator).
The basic technique is to input your load data and environmental
conditions into the LRBC program and then generate a drop
chart. Select MOAs for the drop display, and choose 10-Yard
Range Increments. Look for MOA drops on the chart that are as
close as possible to the MOA drops shown on the reticle image
below. Then, simply cross reference the listed yardage numbers—
save these yardages for field reference and use.
Visit vtxoptics.com for our
Long Range Ballistics Calculator.
2.4
5.6
9.5
14.6
Using the Reticle for Range Estimation
The AR-BDC reticle can be used to quickly estimate ranges when
viewing objects of known dimensions of either 9” or 18”. To be
accurate, ranging will require the Strike Eagle to be set to 6X
magnification.
Distance will be approximately 100 yards when diameter of circle
pattern matches an 18” object or radius of circle matches a 9”
object.
Distance will be approximately 200 yards when total width of
first horizontal mark matches an 18” object or half width of line
matches a 9” object.
Distance will be approximately 300 yards when total width of
second horizontal mark matches an 18” object or half width of
line matches a 9” object.
Distance will be approximately 400 yards when total width of
third horizontal mark matches an 18” object or half width of line
matches a 9” object.
Distance will be approximately 500 yards when total width of
fourth horizontal mark matches an 18” object or half width of line
matches a 9” object.
Distance will be approximately 600 yards when total width of
fifth horizontal mark matches an 18” object or half width of line
matches a 9” object.
See diagram to the left.

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