Winchester Repeating Arms 70 - Manual (Page 26)

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Gently move the rear sight blade holder to the right with
your fingers. Your gun will now shoot more to the right.
Moving the blade holder to the left is just as easily done.
The position of the rear sight base with respect to the
sight mount on the barrel is marked with index lines. Note
how much you adjust the sight as you sight in your rifle.
Remember:
• Move the rear sight to the right to shoot farther to
the right on the target.
• Move the rear sight to the left to shoot farther to
the left on the target.
m ounting a S cope
beFore Mounting a scoPe, sight or other
accessories to your riFle, Place the “saFety” in
the interMediate Position. oPen the action and
MaKe certain your riFle is coMPletely unloaded.
KeeP the MuZZle Pointed in a saFe direction.
Failure to Follow these warnings could result
in serious injury or death.
The top of the Model 70 receiver is drilled and tapped
for scope bases. Each scope base is mounted using two screws.
The scope base holes are usually fitted with filler screws.
NOTICE! always use the correct bases For this
riFle and the aPProPriate length screws.
1. Place your rifle in a gun vise or on a table or other
safe/secure location. Protect the finish with rags or
other padding.
2. You should have a compatible one- or two-piece style
base and four screws of the correct length.
3. Clean all oil, grease or dirt from the receiver top and
from the scope base parts.
4. Position your rifle with the top of the receiver upward.
5. Remove the four filler screws from the top of the
receiver using a very small, thin-bladed gunsmithing-
type screwdriver.
6. Pre-position the bases on the receiver top to determine
the best orientation of the bases.
7. Insert the screws through the bases and screw them
into the receiver top using the correct tool.
You must use screws of the appropriate length to ensure
proper thread engagement. Once the bases are
installed, check inside the receiver to verify that the
base mounting screws are not too long and interfering
with the operation of the bolt.
Many gunsmiths find it helpful to use a drop of
serviceable thread locking compound to assure the
screws stay tight. Make sure the thread locking
compound does not get into the action or trigger.
Be careful to assure that the threads of each screw
engage properly in the threads in the receiver to
prevent stripping the threads in the receiver.
To decrease the amount of overtravel, turn the
adjustment screw closest to the action in a clockwise
direction using a 1 /
16
" Allen wrench.
NOTICE! iF the overtravel screw is turned in
too Far, the trigger cannot be Pulled Far
enough to release the sear and Fire the riFle.
turn the screw counterclocKwise until the
trigger can be Pulled.
6. When finished making the adjustment, place a drop
of serviceable thread locker on the adjustment screw.
7. Place the barreled action back in the stock and
reinstall the magazine box (if necessary) and
bottom metal. Torque the two action screws to
35 inch-pounds.
S ight a DjuStment
beFore adjusting the sights, Place the “saFety”
in the interMediate Position. oPen the action
and MaKe certain your riFle is coMPletely
unloaded. KeeP the MuZZle Pointed in a saFe
direction. Failure to Follow these warnings
could result in serious injury or death.
Some Model 70 rifles are fitted with open sights. The
style and adjustment system may vary between models
and grades. The proper procedure is to shoot a group with
the sights set as they come from the factory (intermediate
position on both elevation and windage), and then make
incremental adjustments to move the rear sight blade and
blade holder to position the group on your target. The
procedures below are for a common style of open sights
found on Model 70 rifles.
u p or D oWn e levation a DjuStmentS
Adjusting your rifle to shoot higher requires you to
raise the rear notch on your rifle’s rear sight elevation
adjustment. With most Model 70 sights this is
accomplished by first loosening the screw on the
elevation adjustment and then moving the rear sight
blade (the part with the rear notch) upward. Use your
fingers to lift it up, then retighten the screw. Marked
index lines give you a reference as you adjust the sight.
Adjusting the sight to make your rifle shoot lower is
just the opposite — move the rear sight blade down.
Remember:
• Move the rear sight blade up to shoot higher on
the target.
• Move the rear sight blade down to shoot lower on
the target.
r ight o r l eFt W inDage a DjuStmentS
On some Model 70 sights, the entire rear sight blade holder
is dovetailed in the rear sight base. To adjust for windage,
first loosen the rear sight windage screw, which secures
the rear sight blade holder in the dovetail on the base.