Leupold FX-3 Owner's Manual page 9

W A R N I N G
If a scope is mounted too far to the rear, the eyepiece
can injure the shooter's brow. Shooting at an uphill angle
also increases this hazard because it shortens the dis-
tance between the brow and the rear of the scope. For
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this reason, Leupold scopes are engineered to provide
generous eye relief. Therefore, when mounting your
scope, we recommend positioning it as far forward in
the mounts as possible to take full advantage of this
generous eye relief.
Leupold riflescopes are engineered to provide a generous 3" to 5"
eye relief, depending on the model and the magnification level.