The Difference Between Controlled Round and Push Feed | MidwayUSA Gunsmithing

Published on October 9, 2017
Duration: 1:29

This guide explains the fundamental differences between Controlled Round Feed (CRF) and Push Feed rifle actions, as demonstrated by Larry Potterfield using a Mauser 98 and a Remington 700. CRF ensures the extractor maintains control of the cartridge from the magazine to the chamber, while Push Feed captures the rim upon bolt closure. The video highlights the reliability of CRF through rapid cycling.

Quick Summary

Controlled Round Feed (CRF) rifle actions, like the Mauser 98, ensure the extractor controls the cartridge rim from magazine to chamber. Push Feed actions, such as the Remington 700, push the round into the chamber, with the extractor engaging the rim upon bolt closure, offering a simpler mechanism.

Chapters

  1. 00:00Introduction: CRF vs. Push Feed
  2. 00:21Controlled Round Feed (CRF) Explained
  3. 00:46Push Feed Explained
  4. 01:02Demonstration & Conclusion

Frequently Asked Questions

What is the main difference between Controlled Round Feed and Push Feed rifle actions?

Controlled Round Feed (CRF) ensures the extractor controls the cartridge rim from the magazine to the chamber, as seen on a Mauser 98. Push Feed actions, like the Remington 700, push the cartridge into the chamber, with the extractor engaging the rim only upon bolt closure.

How does a Controlled Round Feed system work?

In a CRF system, as the bolt strips a cartridge from the magazine, the cartridge rim slides under the extractor. This maintains positive control of the round throughout the entire chambering process, ensuring it's always held securely.

What is the function of the extractor in a Push Feed action?

In a Push Feed action, the extractor is typically a smaller, internal component that engages the cartridge rim only after the bolt has fully pushed the cartridge into the chamber and is locked down. It doesn't control the round during the initial feeding phase.

Which rifle action is considered more reliable, CRF or Push Feed?

Controlled Round Feed (CRF) actions are often considered more reliable, especially in adverse conditions, because the extractor maintains constant control of the cartridge rim. Push Feed actions are simpler and more common in modern rifles.

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