Quick Tip: Using the Hornady Concentricity Gauge to Load Better Ammo

Published on March 9, 2020
Duration: 4:16

This guide details how to use the Hornady Concentricity Gauge to measure and correct bullet run-out in loaded ammunition. Instruction from an expert highlights how proper alignment ensures consistent rifling engagement, leading to improved accuracy. The process involves using the gauge's dial indicator and adjustable ram to achieve straighter bullets, with noted variations in performance depending on the rifle.

Quick Summary

The Hornady Concentricity Gauge measures bullet run-out, a critical factor for rifle accuracy. By using its dial indicator and adjustable ram, reloaders can identify and correct misalignment, ensuring bullets enter the rifling consistently for tighter groups.

Chapters

  1. 00:00Importance of Concentricity
  2. 00:16Impact of Run-out on Accuracy
  3. 01:14Gauge Components and Setup
  4. 01:53Measuring Run-out
  5. 02:12Correcting Bullet Alignment
  6. 03:17Results and Variations

Frequently Asked Questions

What is bullet run-out and why is it important for accuracy?

Bullet run-out is the degree to which a bullet is misaligned with the centerline of the cartridge case. High run-out causes the bullet to enter the rifling unevenly, leading to inconsistent projectile flight and larger shot groups, thus reducing overall accuracy.

How does the Hornady Concentricity Gauge work?

The Hornady Concentricity Gauge uses a dial indicator to measure the deviation of the bullet's rotation. It features a spring-loaded plunger to hold the bullet and a tailstock for case rim support, allowing users to measure run-out in thousandths of an inch.

Can the Hornady Concentricity Gauge correct bullet run-out?

Yes, the Hornady Concentricity Gauge has an adjustable ram screw. By locating the low spot on the dial indicator and applying pressure with the screw, users can gently nudge the bullet towards better alignment, reducing run-out.

What are the benefits of using straightened ammunition?

Straightened ammunition ensures a more consistent presentation of the bullet to the rifling upon firing. This can lead to tighter shot groups and improved accuracy, making straightened rounds particularly beneficial for precision shooting applications.

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