Bushnell NITRO Guia Del Propietario página 5

ATTACHING A MOUNT, RINGS AND SCOPE TO YOUR RIFLE
WARNING: BEFORE BEGINNING THE MOUNTING PROCEDURE, BE SURE THE ACTION IS OPEN, THE CLIP OR
MAGAZINE IS REMOVED AND THE CHAMBER IS CLEAR. DO NOT ATTEMPT ANY WORK UNTIL YOUR FIREARM
HAS BEEN CLEARED AND DETERMINED TO BE SAFE.
WARNING: IF THE SCOPE IS NOT MOUNTED FAR ENOUGH FORWARD, ITS REARWARD MOTION MAY
INJURE THE SHOOTER WHEN THE RIFLE RECOILS.
In mounting your scope, we recommend that you DO NOT take short cuts as it may lead to damage to either the mounting
system or to the scope. Each mounting system will have its own instructions to follow, and it is best to read the instructions
first to be sure you understand them and have the necessary tools on hand.
We further recommend that you plan to go through the mounting procedure twice. The first time, to be sure everything fits
together and functions properly. On the first run through, please keep the following in mind:
• Before attaching the base, clean the mounting holes in the receiver and the threads of the attaching screws with acetone
or any good solvent to free them of oil or grease.
• If the mount manufacturer has recommended the use of a thread adhesive, do not use it on the first mounting trial. Once
adhesive has set, it is difficult to demount if anything needs correction.
• Be sure the mounting screws do not protrude into the receiver or the barrel.
• When using dovetail mounts, do not use the scope as a lever when installing the scope. The initial resistance to turning
may cause damage to the scope, and is not covered by the warranty. We recommend using a 1" wooden dowel or metal
cylinder to seat the rings.
• Be sure the position of the scope does not interfere with the operation of the action.
• Be sure there is at least 1/8" of clearance between the edges of the rings and any protruding surfaces such as the turret
housing (saddle), power selecting ring, and the flare of the objective bell. Also be sure there is at least 1/8" of clearance
between the objective bell and the barrel.
• You should test position the scope for the proper eye relief. The scope rings should be left loose enough so that
the scope will slide easily. Variable power scopes should be set at the highest magnification when performing this
procedure. Mount the rifle and look through the scope in your normal shooting position.
• Test position the rifle for the proper cheek weld a number of times to ensure that your scope is positioned properly.
• When you are satisfied that everything is okay, demount and start again. This time, seat all screws firmly.
PARALLAX ADJUSTMENT / SIDE FOCUS
The Parallax Knob or Side Focus adjustment corrects Parallax error. Parallax error is experienced when the intended target
and the reticle are not on the same focal plane. The side focus adjustment relocates an optical element within the scope,
manipulating the incoming image to appear on the same focal plane as the reticle within the riflescope, thus eliminating
parallax error. Parallax error results in inconsistencies regarding point of impact. This can be best experienced by looking
at a 100 yard target with the side focus set to 500 yards. While slightly moving your head left and right, or up and down,
you will notice movement at the location where the crosshairs intersect. However, if you change your side focus adjustment
to 100 yards while looking at the 100 yard target, the intersection of the crosshairs will not move. Please note the distance
markings on the dial are intended as reference points only. Exact side focus adjustments may needed after making
adjustments to the eyepiece in order to achieve a high resolution, parallax free image.
PRELIMINARY SIGHTING-IN
You can save a significant amount of expense and frustration by pre-sighting the scope to the rifle before you take it to
the range for zeroing.
There are two basic methods that can be used for pre-sighting your scope. Method one is to use a Bushnell® Bore Sighter
(laser, magnetic or standard). The use of a Bore Sighter saves time and ammunition and is the system most often used by
gunsmiths. The second method is traditional bore sighting:
BORE SIGHTING METHOD
1. Place a target at 25 to 50 yards.
2. Remove the bolt from the rifle.
3. Place the rifle on sandbags or a shooting rest.
4. Set the scope to its lowest magnification.
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