Vortex Optics RAZOR HD 1-4X24 (MOA) - EBR-556 MOA User Manual
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Range Sight-In
After the riflescope has been bore-sighted, final sight-in
should be done at the range using the exact ammunition
you expect to hunt or shoot with. The Razor 1–4x24
EBR-556 scope is specifically calibrated for the popular
5.56x45mm cartridge using 55 gr. bullets and a 100
yard zero range. The Razor 1–4 can be used with other
cartridges, but be aware that the bullet drop references
used on the EBR-556 reticle may not accurately match.
Before range shooting, be sure the reticle is in focus
(see Reticle Focus Adjustment).
1. Following all safe shooting practices, fire a three-shot
group as precisely as possible.
2. Next, adjust the reticle to match the approximate center
of the shot group (see section on Windage and Elevation
Adjustment).
3. If the rifle is very solidly mounted and cannot be moved,
simply look through the scope and adjust the reticle until it is
centered on the fired group.
4. Carefully fire another three-shot group and see if the bullet
group is centered on the bullseye.
If necessary, make another adjustment to the riflescope
and fire another group to verify zero. This procedure can
be repeated as many times as necessary to achieve a perfect
zero.