The Difference Between Controlled Round and Push Feed | MidwayUSA Gunsmithing

Published on October 9, 2017
Duration: 1:29

Larry Potterfield, founder of MidwayUSA, provides an expert demonstration of the key differences between Controlled Round Feed (CRF) and Push Feed bolt action systems. He uses a Mauser 98 to illustrate CRF, where the extractor grips the cartridge rim early, and a Remington 700 for Push Feed, where the extractor engages later. The demonstration highlights the mechanical control each system offers during the feeding and chambering process.

Quick Summary

Controlled Round Feed (CRF) bolt actions, like the Mauser 98, ensure the extractor grips the cartridge rim as it's stripped from the magazine, maintaining control throughout chambering. Push Feed actions, like the Remington 700, push the cartridge into the chamber first, with the extractor engaging the rim only upon bolt closure. CRF is generally favored for its superior reliability in maintaining cartridge control.

Chapters

  1. 00:00Introduction to Rifle Feeding Systems
  2. 00:21Controlled Round Feed (CRF) Explained
  3. 00:46Push Feed Explained
  4. 01:02Demonstration and Conclusion

Frequently Asked Questions

What is the main difference between Controlled Round Feed (CRF) and Push Feed bolt actions?

Controlled Round Feed (CRF) ensures the extractor grips the cartridge rim as it's stripped from the magazine, maintaining control throughout chambering. Push Feed allows the bolt to push the cartridge into the chamber first, with the extractor engaging the rim only upon bolt closure.

How does a Mauser 98 rifle demonstrate Controlled Round Feed?

In a Mauser 98, the cartridge rim slides under the large claw extractor as it's fed from the magazine, ensuring the extractor is always in control of the cartridge during the chambering process.

What is the operational characteristic of a Remington 700's Push Feed system?

The Remington 700's Push Feed system pushes the cartridge directly into the chamber. The extractor only snaps over the cartridge rim once the bolt is fully closed, meaning the cartridge isn't under extractor control during the initial feeding.

Which bolt action feeding system is considered more reliable?

Controlled Round Feed (CRF) is often considered more inherently reliable because it maintains positive control of the cartridge rim from magazine to chamber, reducing the chance of feeding failures, especially in adverse conditions.

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