DIY Bullet Seating Depth

Published on October 11, 2011
Duration: 4:31

This guide details how to accurately measure bullet seating depth using the Frankford Arsenal Cartridge Overall Length Gauge, a technique crucial for optimizing long-range accuracy and hunting performance. Expert reloader Aaron Davidson explains the process, emphasizing the importance of understanding bullet jump to the rifling lands. The guide covers using the gauge with a cleaning rod and digital calipers to determine optimal seating depths, recommending a slight jump for hunting applications to ensure safe extraction.

Quick Summary

Accurately measure bullet seating depth using the Frankford Arsenal Cartridge Overall Length Gauge. This universal tool, combined with a cleaning rod and digital calipers, helps determine the optimal bullet jump to the rifling lands for improved rifle accuracy and safe hunting extraction.

Chapters

  1. 00:00Introduction to VLD Bullets
  2. 00:54Methods for Measuring Chamber Length
  3. 02:08Frankford Arsenal Gauge Demonstration
  4. 03:58Final Measurement and Die Adjustment

Frequently Asked Questions

What is the best way to measure bullet seating depth for long-range accuracy?

For optimal long-range accuracy, measure the distance from your rifle's bolt face to the rifling lands. Then, seat your bullet so it's a specific distance (jump) away from those lands, often determined using tools like the Frankford Arsenal Cartridge Overall Length Gauge.

Why is bullet seating depth important for rifle performance?

Bullet seating depth significantly impacts chamber pressure, feeding reliability, and accuracy. Seating bullets too deep can increase pressure, while seating them too far out might cause feeding issues. Optimal depth ensures consistent ignition and projectile flight.

What tools are needed to measure bullet seating depth accurately?

Essential tools include the Frankford Arsenal Cartridge Overall Length Gauge, a compatible cleaning rod, and a set of digital calipers. These allow for precise measurements of chamber length and bullet jump to the rifling.

What is a safe bullet jump for hunting rifles?

For hunting applications, it's recommended to seat bullets with a jump of approximately 0.015 to 0.025 inches away from the rifling lands. This accounts for potential variations and prevents the bullet from sticking in the lands during extraction.

Related News

All News →

More Gunsmithing & DIY Videos You Might Like

More from Gunwerks

View all →