CRF vs PF

CRF stands for Controlled Round Feed, PF stands for Push Feed. With a CRF action the cartridge is captured behind the extractor as soon as it comes out of the magazine box. Many claim this is more reliable, especially if you short-stroke the bolt because they believe you cannot jam a CRF action like a Winchester model 70.

Its true that if you start a cartridge into the chamber with a PF action and stop then fully retract the bolt you can create a double feed when you push it forward. It’s also true that if you do not fully retract the bolt in a CRF action far enough to engage the ejector, but enough for the bolt face to pass the rim of the next cartridge in the magazine box – which has probably moved forward under recoil – and then push the bolt forward with force, you will create a jam that is as hard to remove as an elected Senator.

The other claim is that CRF actions have more reliable extraction. I can not prove or disprove this but I can tell you that if you break the extractor on a CRF action, you best have one with you that has been fitted to your bolt. With most PF actions, installing a new extractor is relatively easy.

In the end, if you know how to work a bolt action rifle I cannot see that it really matters. For what its worth, as glamorous as the CRF action seems with its Mauser heritage, remember; a major war has never been won with a CRF action and our military’s battle rifle is a PF design. Granted, since it is a semi-auto, the user interface is not as important. And, its the user that is capable of making either a CRF or PF action fail more so than the way it was designed.

Advertisements

About gunwriter

Born and raised in the West Virginia hills, Richard literally grew up in the woods. He has chased coon hounds until daylight, waited out whitetails perched high in an oak, canoed the New River and hunted from the Montana Mountains to the Green Hills of Africa. During service in the Army and later as a municipal police officer and Special Agent with the railroad police, Richard obtained numerous certifications in small arms instruction. He has trained military personnel, law enforcement officers and civilians in the application of firearms for defensive, competitive and recreational use. Richard won the West Virginia Governor’s Twenty Award for law enforcement, the West Virginia National Guard State Pistol Competition and earned his Distinguished Medal with pistol. Badge turned in, Richard is now a contributing editor for several magazines. He was the compiling author of the book, Rifle Bullets for the Hunter and conceptualized and contributed to Selecting and Ordering a Custom Hunting Rifle. Richard also contributed a chapter to the John Velke book, The True Story of the Baldwin-Felts Detective Agency. Richard has patents on a riflescope reticle and a revolutionary bullet testing media. A hillbilly at heart, Richard lives on Shadowland - his shooting range in West Virginia - with the most understanding wife in the world, their three kids and a very protective ridgeback hound.
This entry was posted in THIS & THAT and tagged . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s