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How to Zero a U.S. Optics Foundation Series Scope | ER3K Explained
Step-by-step guide to zeroing U.S. Optics Foundation Series riflescopes, covering the ER3K elevation adjustment system and center screw calibration across four scope models.
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Step-by-step guide to zeroing U.S. Optics Foundation Series riflescopes, covering the ER3K elevation adjustment system and center screw calibration across four scope models. This video covers rifle-optics, scope-zeroing, precision-rifle, marksmanship-fundamentals and is featured among our top picks for security.
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