This guide details how to accurately zero a Holosun 407CO red dot optic on a Glock pistol using a Caldwell Pistolero bench rest. It emphasizes choosing a 25-yard zero distance for precision, utilizing the bench rest for stability, and applying proper trigger control techniques like the 'surprise break'. The process includes calculating optic adjustments based on MOA and actual impact deviations. Instruction is provided by TheHumbleMarksman, demonstrating high expertise in firearm optics and marksmanship.
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