Vortex Optics RAZOR HD 1-4X24 (MOA) - EBR-556 MOA - Manual (Page 20)

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Using the EBR-556 with Other Calibers and Loads
The following drop chart for a .308 (7.62mm) Sierra
165 gr. HPBT bullet shot at 2700 fps. was generated
on a ballistic website (JBM Ballistics). As you can see,
the drops are quite close to those used on the EBR-556
reticle. Up to 500 yards, the difference is generally 1/2
MOA or less, and for many applications would allow the
reticle to be effectively used with the Sierra .308 HPBT
165 gr. bullet.
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Example
Although the Razor 1-4 EBR556 uses a reticle calibrated
specifically for the 55gr. 5.56mm round, it can still be
easily used with many other popular calibers and loads.
MOA drop numbers used on the reticle are listed below.
Generating a custom ballistic drop chart for other calibers
and loads being used will allow the MOA drops to be
compared for compatibility.
200 Yards – No drop number supplied
300 Yards – 4.4 MOA
400 Yards – 8.0 MOA
500 Yards – 12.5 MOA
600 Yards – 18.4 MOA
700 Yards – 25.8 MOA
EBR556 Reticle