Hawke Optics Sidewinder 30 SF 8-32x56 - Manual (Page 4)

The Sidewinder 30 is fitted with 1/4 MOA
push/pull locking turrets.
STEP 3 - Zeroing the riflescope
WARNING: ALL SHOOTING SHOULD BE CARRIED OUT AT
AN APPROVED RANGE OR OTHER SAFE AREA.
EYE AND EAR PROTECTION IS RECOMMENDED
DURING THE PROCEDURE.
For more accurate range finding and more sensitive operation, the supplied 100mm big wheel can
be used. The scale on the Big wheel is spaced out more, therefore it is easier to determine the
exact distance/parallax free setting.
Side Wheel Parallax - Parallax correction:
To be parallax free, the target must be at the distance equal to the scope focus. Any other
distance will cause parallax error, which manifests itself as apparent movement of the reticle
against the target. The Sidewinder is equipped with side wheel parallax. To adjust the range
setting of the scope, rotate the side wheel focus knob to the distance you want to shoot. When the
image is sharp, the correct parallax setting is achieved. On higher magnification it is easier to
determine whether the image is in or out of focus. Once the image is in focus the distance can be
read on the side wheel scale. This can successfully be used to ‘range find’ the target.
ELEVATION TURRET
WINDAGE TURRET
LOCKED
LOOSEN
TO RESET
FULLY UP
TO RESET
UN-LOCKED
Align the ‘teeth’ of the side wheel focus knob and
the reticle brightness control. Then slide the big
wheel completely past the brightness control and
onto the side wheel focus knob.
When located, rotate the scale until the yardage on
the big wheel matches the scale on the inner focus
knob.
Once aligned carefully remove the big wheel,
keeping the scale in the same position Tighten up
the three screws on the rear of the wheel.
Position the wheel back on the focus knob and
tighten the three small grub screws. Please note
these should not be over tightened.
To read the scale on the Big Wheel we recommend
using the Big Wheel pointer. To install, place the
pointer around the body tube, at your preferred
position.
To install the big wheel, first of all you need to loosen the three screws on the rear of the wheel and the
three hex (grub) screws on the inner ring. DO NOT FULLY REMOVE THE SCREWS. Once these screws
are loosened the inner rubber ring should rotate. Please ensure for set–up that it is loose and rotating.
1
2
1. Large wheel
2. Pointer
OPERATION AND FEATURES
To get the most out of your new riflescope we recommend that you read the following, in
addition to the ‘instructions for use’ so you fully understand all of the features and how they
operate.
- Side Wheel Parallax
- Big Wheel Pointer - Zoom Magnification
- Sunshade and lens covers - Reticle Illumination - Reticle types -
- BRC Software
4 3
When a satisfactory zero is achieved, the turrets can be reset. To do this, simply loosen the hex
screw on the top of the turrets and then pull the turrets up to their furthest extent. The turrets will
then rotate without clicking. Adjust to the ‘0’ zero point, push the turrets down to locate into the
locked position and re-tighten the hex screw.
1/4 MOA Turrets
Each click of adjustment is known as a 1/4 minute of angle (1/4 MOA). This means that one click
of movement closely equates to 1/4” of movement on a target set at 100 yds distance. Therefore
at different ranges, each click of adjustment changes:
50 yds = 1/8” 100 yds = 1/4” 200 yds = 1/2” 300 yds = 3/4”
The Sidewinder turrets are factory preset in the centre of the FOV (Field of View). The reticle
needs to be adjusted to the ‘zero’ distance of the rifle on which it is mounted.
Before adjusting the turrets, you must first unlock them. This is done by pulling them out, so that
they click whilst they rotate. The turrets can than be adjusted until they are on zero. To lock the
turrets, simply push them back down.
Installing and Resetting the Scale on the Big Wheel