This guide details how to zero an EOTech holographic sight, presented by Karl Erickson, a former US Special Forces member. It covers selecting the optimal zero distance (50 meters recommended for tactical use), achieving a precise aiming point, co-witnessing with iron sights, establishing a stable shooting position, and making precise adjustments based on MOA calculations. The guide emphasizes confirming the zero at the intended engagement distance.
This video explains the practical differences between a 25-meter and a 50-meter rifle zero, focusing on the M4 platform. A 50-meter zero offers a flatter trajectory, keeping shots within 2.5 inches of the line of sight out to 250 meters, simplifying range estimation. Conversely, a 25-meter zero results in a higher arc, requiring more compensation for distance. The optimal zero depends on the specific ammunition's ballistics and the intended engagement range.
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