User's Manual
76
tical axis of the rie. This will be easier if you nd a vertical
reference such as the straight edge of a building or a tele-
phone pole. Make sure the scope has not moved forward or
backward while doing this.
v. Tighten the rings per the manufacturer’s instructions.
d) Bore Sighting
Bore sighting is a preliminary procedure to achieve proper align-
ment of the scope with the rie’s bore.
i. The initial bore sighting of the scope can be at short range of
50 yards. This is easier than trying to bore sight at 100 yards
and will get you on the paper at that distance, so to save time
and money at the shooting range. We highly recommend us-
ing a bore sighter, but make sure to follow the manufacturer’s
instructions.
ii. This can also be done by removing the bolt and sighting
through the barrel on a bolt action rie. Make sure the rie
is placed solidly on a bench and the bolt is removed. You
can then sight through the bore and center the target inside
the barrel (Note: Many ring and base sets have some kind of
windage adjustments. Use these external adjustments rst
before using the scopes internal windage adjustments). With
IF A LASER BORE SIGHTING OR ANY OTHER SIMILAR DEVICE INSIDE
THE BORE WAS USED, IT MUST BE REMOVED BEFORE FIRING. AN
OBSTRUCTED BORE CAN CAUSE SERIOUS DAMAGE TO THE GUN AND
POSSIBLE INJURY TO THE SHOOTER.
target centered in the bore, make windage and elevation ad-
justments until the reticle crosshair is also centered over the
bulls eye.
e) Zeroing the Scope
i. Set parallax side focus knob to the 100 yard position and vari-
able-power scopes to highest power. Ideally set the rie on a
two or three holding point gun rest, and then re three rounds
at a target 100 yards away. Observe the bullet holes on the
target and calculate how far those bullet holes are o the
center of the target, and then adjust windage and elevation
knobs to move the center of the reticle up, down, left or right.
Fire another three rounds, then observe and adjust. Repeat
this step as necessary until the three round bullet holes are
perfectly aligned with the center of the target.
ii. Setting Windage and Elevation
Athlon Argos BTR scopes have removable locking screws of
windage and elevation turret knob. Once a rie has been sight-