Vortex Optics VIPER 2-7X32 - VERSA-PLEX C3 - Manual (Page 5)

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iflesco pe
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ounting
To get the best performance from your Viper riflescope, proper
mounting is essential. Although not difficult, the correct steps must
be followed. If you are unsure of your abilities, it would be best to use
the services of a qualified gunsmith.
Rings and Bases
Viper riflescopes are available with either a 30 mm or 1-inch tube so
select the ring size that matches the tube diameter of your riflescope. Be
sure to select a base and matching rings appropriate for your rifle and
mount according to the manufacturer’s instructions.
Note: Vortex Optics recommends not exceeding 18 in/lbs (inch/pounds)
of torque on the ring screws.
TIP: Select the lowest ring height that will provide complete clearance
between the riflescope and rifle in order to avoid contact with barrel,
receiver, bolt handle or any other part of the rifle. A low mounting
height will help assure proper cheek weld, aid in establishing a solid
shooting position, and promote fast target acquisition.
Eye Relief and Reticle Alignment
After installing the bottom ring halves on the mounting base, place
the riflescope on the bottom ring halves and loosely install the
upper ring halves. Before tightening the scope ring screws, adjust for
maximum eye relief to avoid injury from recoil:
1. Set the riflescope to the middle of its magnification range.
2. Slide the riflescope as far forward as possible in the rings.
3. While viewing through the riflescope in a normal shooting
position, slowly slide the riflescope back towards your face. Pay
attention to the field of view. Stop sliding the riflescope back as
soon as you see the full field of view.
4. Without disturbing the front-back placement, rotate the
riflescope until the vertical crosshair exactly matches the vertical
axis of the rifle. Use of a reticle leveling tool, a weight hung on
a rope, flat feeler gauges, or a bubble level will help with this
procedure.
Note: After aligning the reticle, tighten and torque the ring screws
down. Vortex Optics recommends a torque setting of 15-18 in/lbs on
the ring screws.
Using bubble levels to square
the riflescope to the base.