Burris AR - Manual (Page 6)

How to Use Your AR Riflescope
Calculating Holdover/Hold-Off
The C4 Plus Custom Clicker ensures that elevation
adjustment perfectly matches the ammunition you
are shooting, and when used properly eliminates the
need to calculate holdover. Determining an accurate
distance to your target is key, and Burris recommends
using a rangefinder in the field for optimum accuracy.
Once the distance to your target is confirmed, turn the
dial on your Custom Clicker elevation knob to match
that distance. For example, if your target is 250 yards
away, turn your Custom Clicker until 250 is aligned
with the reference mark on your scope. Since the
scope is calibrated to your cartridge, dialing the
yardage to your target allows you to use the center
point of the reticle crosshairs as your aiming point –
no holdover or under is needed.
To correctly determine hold-off for wind, first determine
as best as you can the wind speed at your target. Refer
to the customized WindMap provided by Burris that
shows, in MOA, the accurate hold-off value for a 10
MPH wind at a specific 100-yard increment distance.
Using this customized WindMap as an example, if your
target is 200 yards away and the wind is blowing 10
MPH, you will hold-off 1.3 reticle tick marks into the
wind. The wind is blowing 20 MPH? Double the value
and hold-off 2.6 reticle tick marks into the wind.
It’s blowing only 5 MPH? Cut the value in half and
hold-off .65 tick marks into the wind.
™
1= 1.0 4= 5.0
2= 2.2 5= 6.5
3= 3.5 6= 8.5
5.56X45 NATO 55GR FMJ
3200FPS 2000FT
5
AR user guide_Layout 1 11/18/13 10:49 AM Page 6