First Focal Plane And Second Focal Plane Reticles; Bore Sighting And Zeroing The Scope - Bushnell ET3124F User Manual

Please note the distance markings on the dial are intended as reference points only. Exact side focus adjustments may be needed after
making adjustments to the eyepiece in order to achieve a high resolution, parallax free image.

FIRST FOCAL PLANE AND SECOND FOCAL PLANE RETICLES

Some models of Bushnell Elite Tactical Riflescopes described this manual have their illuminated reticles located in the first focal plane,
while others place the reticle in the second focal plane. If the reticle is within the first focal plane, it will increase in size when the
magnification is increased. This feature allows the continued use of the mil measurement system contained in the reticle, regardless
of the power setting. Second focal plane reticles restrict the user to making measurements at a specific power, as the reticle remains
the same size regardless of the magnification level.

BORE SIGhTING AND ZEROING ThE SCOPE

Bore sighting is a preliminary procedure to achieve proper alignment of the scope with the rifle bore. It is best done using a Bushnell
Bore Sighter. If a bore sighter is not available, it can be done as follows: Remove the bolt and sight through the gun barrel at a 100 yard
target. Then sight through the scope and bring the crosshairs to the same point on the target using the turrets or windage adjustments.
Return the bolt and prepare to shoot down range at the 100 yard target.
Your next step will be to zero the scope using live rounds. Fire your first shot and note the location of impact. You can use the elevation
and windage adjustments to change the point of impact accordingly. For example, if your first shot went 1 mil high and 1 mil left, adjust
your elevation dial down 1 Mil and your windage dial 1 mil right. Always adjust in the opposite direction from your point of impact.
As you fire your second shot, you should see the point of impact hit closer to your intended target. Multiple rounds may need to be fired
before achieving consistent results. You may also use reticle within your scope to help decipher the correct adjustments. The following
page shows how this works, using the BTR-Mil reticle as an example.
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