Zero Your Rifle | What Everyone SHOULD Know

Published on January 7, 2020
Duration: 17:32

This guide details the process of zeroing an AR-15 rifle, drawing from expert instruction. It covers the fundamental theory of zeroing, optimal red dot optic placement, understanding bullet trajectory and holds, establishing a stable shooting platform, and making precise adjustments. The instruction emphasizes practical application for accurate shooting at various distances.

Quick Summary

Zeroing an AR-15 with a red dot involves understanding that the bullet travels in an arc. A 50/200 meter zero is common, requiring specific holds at different distances due to height-over-bore and trajectory. Mount optics forward for better awareness and adjust based on the average shot group, not outliers.

Chapters

  1. 01:14Zero Theory & Practical Application
  2. 01:44Bullet Trajectory Diagram
  3. 02:52AR-15 with Vortex Red Dot
  4. 10:28Incorrect Prone Posture Example
  5. 13:28Zeroing at 50 Meters

Frequently Asked Questions

What is the best way to zero an AR-15 with a red dot optic?

For an AR-15 with a red dot, a 50/200 meter zero is recommended. Mount the optic forward, understand bullet trajectory, and use a stable prone position. Adjust based on the average shot group, not single shots, using methods like the two-finger rule at 50 meters.

How does bullet trajectory affect zeroing an AR-15?

Gravity causes bullets to fall. For a 50/200 meter zero, the barrel is angled upward to compensate. This creates an arc where the bullet crosses the line of sight twice, requiring specific 'holds' at different distances to compensate for the bullet's path.

Where should a red dot optic be mounted on an AR-15 for optimal performance?

Mount your red dot optic as far forward on the upper receiver as possible without it touching the handguard rail. This positioning prevents 'tunnel vision' and enhances situational awareness, allowing for better scanning.

What is the 'two-finger' rule for adjusting an AR-15 optic during zeroing?

The 'two-finger' rule is a practical guideline for optic adjustments at 50 meters. It suggests that the width of two fingers on the target roughly equates to four clicks on many standard optics, helping shooters make quick, approximate adjustments.

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