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Basic moving lead correction, Example – Vortex Optics RAZOR HD GEN II 1-6X24 RIFLESCOPE — VMR-2 Reticle User Manual

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RETICLE

When estimating moving target leads, the MOA marks on the center
horizontal crosshair can be used. Estimating moving leads will require
knowing yardage distance, wind speed, moving target speed and total
bullet flight times including rifle lock time. Bullet flight times can be
roughly calculated based on fps velocities or a ballistic calculator.

Basic moving lead correction

Note: Correctly estimating moving leads is very difficult and requires
considerable practice and knowledge beyond the scope of this manual.

8 MOA reticle correction for a target moving 3 mph at a distance of 600
yards. Elevation already dialed into turret.

Moving Direction

Example