Manual

34
ZEROING ADJUSTMENTS (continued)…
*AII the above values have been rounded off.
To remember your correct zero windage, note location of Windage Scale and Windage Knob
Pointer (heavy mark on outside of knob). Once you have established your correct zero windage
leave your Windage Scale and Windage Knob Pointer on these settings at all times.
WINDAGE KNOB
POINTER
IMPACT
0.3 cm (1/8 in.)
1.25 cm (1/2 in.)
2.50 cm (1 in.)
3.8 cm (1 1/2 in.)
5.0 cm (2 in.)
6.3 cm (21/2 in.)
7.6 cm (3 in.)
8.8 cm (3 1/2 in.)
10.0 cm (4 in.)
FOR WINDAGE KNOB (per click)*…
DISTANCE
25 meters
100 meters
200 meters
300 meters
400 meters
500 meters
600 meters
700 meters
800 meters
WINDAGE
SCALE
25 METER ZEROING PROCEDURES…
Place an appropriate 25 Meter Paper Sighting Target 25 meters downrange and follow the
steps below to establish a “battlesight” zero.
1.) Do not move the front sight post on your Bushmaster XM15 E2S rifle at this time. It was set at
the factory and should be very close to your zero.
2.) Center the rear sight aperture by turning the windage knob left or right. This is called
"Mechanical Zero Windage".
3.) The Unmarked (smaller) Aperture should be up.
33
ZEROING YOUR SIGHTS…
This is the procedure to follow in order to “Zero” your mechanical sights.
1.) In this procedure, the Front Sight Post and Rear Sight Windage Knob
are adjusted so that you can hit your point of aim at 300 meters:
2.) Flip the unmarked (smaller) aperture to the up position (as shown).
3.).Set the Rear Sight so that the 300-meter mark is aligned with the mark
on the left side of the receiver.
ZEROING ADJUSTMENTS…
1.) During zeroing procedures, only the front sight post and windage knob
are adjusted to move the strike of the bullet on the target.
2.) If you are zeroing on a 25-meter range, the rear sight elevation knob is
adjusted to the 300-meter mark plus one "click" up.
3.). Also see the detailed zeroing procedures on the following pages.
FRONT SIGHT: To adjust elevation, depress detent and rotate
post. To raise strike of bullet, rotate post in the direction of
arrow marked UP. Reverse the direction of rotation to
lower strike of bullet. Each graduation (notch) moves the
point of impact of bullet as indicated.
300 METERS
ON THE
ELEVATION KNOB
(dial rotated down)
IMPACT
0.9 cm (3/8 in.)
3.5 cm (1 3/8 in.)
7.0 cm (2 3/4 in.)
DISTANCE
25 meters
100 meters
200 meters