Preventing ammo set-back!

Published on March 4, 2026
Duration: 1:21

This guide, presented by an experienced firearm handler, details the practice of preventing "ammo set-back" by avoiding the repeated chambering and ejection of rounds, particularly in carry firearms. The presenter, drawing on their expertise in ammunition management, advises loading a carry gun once and suggests a method for managing rounds that have been chambered multiple times.

Quick Summary

Prevent ammo set-back by avoiding repeated chambering of rounds in your carry firearm. Load your gun once and manage previously chambered ammunition by setting it aside for range practice. This practice ensures reliability and avoids potential over-pressurization issues associated with bullet setback.

Chapters

  1. 00:00Ammo Set-Back Prevention Practice
  2. 00:41Avoiding Ammo Set-Back in Carry Guns
  3. 01:08Revolver Loading Exception

Frequently Asked Questions

What is ammo set-back and how can it be prevented?

Ammo set-back occurs when a bullet is pushed further into the casing due to repeated chambering. To prevent it, avoid chambering the same round multiple times. Instead, load your carry gun once and manage previously chambered rounds by setting them aside for range use.

Why is repeatedly chambering rounds bad for a carry gun?

Repeatedly chambering rounds in a carry gun increases the risk of bullet setback. This can alter the cartridge's internal volume, potentially leading to over-pressurization when fired and affecting feeding reliability. Experienced instructors advise against this practice.

Does ammo set-back apply to revolvers?

No, the concern for ammo set-back is primarily associated with semi-automatic firearms where rounds are repeatedly chambered. Manually ejected rounds from revolvers can typically be returned to the ammunition supply without the same risks.

What is the recommended practice for managing carry ammunition?

A common recommendation from experienced firearm instructors is to load your carry firearm only once. Rounds that have been chambered multiple times should be designated for range use rather than kept as primary carry ammunition.

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