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9.3x57
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Reged: 22/04/07
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Re: CZ550 Controlled Feed: Oh Really?
      31/08/08 11:54 PM

Zimhunter, good question, and tophet pretty much answers it below.

Quote:

As stated in earlier posts, the round from the magazine does not slip under the extractor claw until it is totally pushed forward out of the magazine and is central to the bore and half way into the chamber.

The extractor on my CZ550 is cut away so much at the bottom that this very thing described above is exactly what happens to mine. Whereas on my other "real" Mausers, the rim slides under the extractor and becomes controlled by it before it has popped out of the magazine, on my CZ550, the round sort of pops out of the magazine and slides under the extractor as a fast "1,2" series of events.

However, the round cannot be extracted until it is almost all the way in the chamber. In fact, if the bolt is herky-jerky thrust forward, it is possible to get the round to get ahead of the extractor and then jam in the chamber without being grabbed by the extractor. Pressing on the side of the extractor allows it to snap over. This is a rare occurence in normal operation but can and has happened.


I consider my CZ more a controlled extraction than controlled feed.




Yes, tophet, exactly. I see mine the same way in that after the round is chambered fully it can be extracted under control of the extractor and not lost as occurs with a Remington 700 as soon as a plunger-type kicks it out or something similar to that. In this regard my 550 is more like my SAKO AV.

Here's the rub;

According to CZ, Tatume's gun is wrong. The extractor is not supposed to snap over. The action is supposed to be "controlled feed".

But in reality, since these guns do not have controlled feed of the magazine cartridges, his condition seems preferable than mine, due to the rare-but-possible condition I described above, since mine is not only not controlled feed, but won't snap over either.

I am curious if there are other extractors out there that might not be as heavily undercut as the 550 and would fit the CZ550 bolt and would thus return the rifle to its proper condition. A day rooting thru my gunsmith's Mauser drawers might uncover something?

Before anyone asks, I feel somewhat more confident in my own adjusting skills than I do in sending this rifle to CZ for "adjustment". It may come to that, but my experience with them in the past indicates that I might better just keep my own paws on my gun, and their's off.

Zim, thanks for asking and breathing some new life in this thread.

Maybe others will function test their guns and see how they actually work. I am really curious as to the DG guns. I would NOT want my condition on a DG rifle. It is possible that a larger case {H&H or Rigby or 505-size} might function differently.

The test should include some back-and-forth movement of the bolt when chambering a round to determine at what point, if ever, the cartridge rim comes under grasp by the extractor.

Maybe I can shoot some pix of when a real Mauser grabs a case, vs. what the CZ does. The CZ is more akin to a SAKO AV or Ruger than a Mauser 98. In fact, Tatume's rifle seems about spot on a older Ruger, tho many of the newer Rugers seem to act similarly.

Thanks for the post here.




--------------------
What are the Rosary, the Cross or the Crucifix other than tools to help maintain the fortress of our faith in Jesus Christ, the Son of God?

Edited by 9ThreeXFifty7 (01/09/08 12:30 AM)

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Entire topic
Subject Posted by Posted on
* CZ550 Controlled Feed: Oh Really? 9.3x57 28/08/08 05:25 AM
. * * Re: CZ550 Controlled Feed: Oh Really? zimhunter   31/08/08 12:36 PM
. * * Re: CZ550 Controlled Feed: Oh Really? tophet1   31/08/08 07:22 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   31/08/08 11:54 PM
. * * Re: CZ550 Controlled Feed: Oh Really? zimhunter   01/09/08 12:41 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   01/09/08 12:50 AM
. * * Re: CZ550 Controlled Feed: Oh Really? Tatume   01/09/08 01:30 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   01/09/08 01:43 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   01/09/08 06:30 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   01/09/08 10:24 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   02/09/08 09:15 AM
. * * Re: CZ550 Controlled Feed: Oh Really? ALAN_MCKENZIE   02/09/08 12:15 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   02/09/08 01:43 PM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   02/09/08 07:16 AM
. * * Re: CZ550 Controlled Feed: Oh Really? tophet1   01/09/08 09:19 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   01/09/08 02:25 PM
. * * Re: CZ550 Controlled Feed: Oh Really? Paul   01/09/08 06:16 PM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   01/09/08 09:17 PM
. * * Re: CZ550 Controlled Feed: Oh Really? Paul   02/09/08 07:35 PM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   02/09/08 09:02 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   03/09/08 02:13 AM
. * * Re: CZ550 Controlled Feed: Oh Really? bpesteve   03/09/08 04:58 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   05/09/08 01:49 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   25/02/09 05:28 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   26/02/09 12:46 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   26/02/09 08:41 AM
. * * Re: CZ550 Controlled Feed: Oh Really? Marrakai   26/02/09 11:50 PM
. * * Re: CZ550 Controlled Feed: Oh Really? AFRO408   27/02/09 06:37 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   28/02/09 12:59 AM
. * * Re: CZ550 Controlled Feed: Oh Really? tophet1   06/09/08 01:13 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   06/09/08 10:59 PM
. * * Re: CZ550 Controlled Feed: Oh Really? tophet1   07/09/08 10:42 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   07/09/08 11:49 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   07/09/08 06:46 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   08/09/08 12:44 AM
. * * Re: CZ550 Controlled Feed: Oh Really? Ripp   08/09/08 01:27 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   08/09/08 05:26 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   08/09/08 09:53 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   08/09/08 10:14 PM
. * * Re: CZ550 Controlled Feed: Oh Really? Ripp   08/09/08 09:59 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   08/09/08 10:18 PM
. * * CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   09/09/08 01:23 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? Ripp   09/09/08 10:04 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   09/09/08 10:39 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? Ripp   11/09/08 10:31 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   12/09/08 10:43 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? chuck375   30/09/08 10:45 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   30/09/08 11:03 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   30/09/08 11:08 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? bigmaxx   30/09/08 10:38 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   30/09/08 11:00 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 4seventy   01/10/08 06:56 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   01/10/08 10:48 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? chuck375   05/10/08 08:36 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   06/10/08 02:22 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? chuck375   06/10/08 03:11 AM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? bigmaxx   01/10/08 12:07 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   10/09/08 01:05 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? Paul   10/09/08 02:00 PM
. * * Re: CZ550/VZ24 Extractor CRF: Oh Really? 9.3x57   11/09/08 09:41 AM
. * * Re: CZ550 Controlled Feed: Oh Really? Ripp   08/09/08 06:13 AM
. * * Re: CZ550 Controlled Feed: Oh Really? tophet1   07/09/08 07:56 PM
. * * Re: CZ550 Controlled Feed: Oh Really? 4seventy   07/09/08 08:19 PM
. * * Re: CZ550 Controlled Feed: Oh Really? Tatume   06/09/08 09:37 PM
. * * Re: CZ550 Controlled Feed: Oh Really? kamilaroi   06/09/08 09:44 PM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   05/09/08 08:25 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   05/09/08 11:27 AM
. * * Re: CZ550 Controlled Feed: Oh Really? GSP7   06/09/08 08:15 AM
. * * Re: CZ550 Controlled Feed: Oh Really? 9.3x57   06/09/08 10:51 AM
. * * Re: CZ550 Controlled Feed: Oh Really? zimhunter   06/09/08 12:19 PM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   05/09/08 11:57 AM
. * * Re: CZ550 Controlled Feed: Oh Really? Huvius   01/09/08 12:35 AM
. * * Re: CZ550 Controlled Feed: Oh Really? hoppdoc   28/08/08 07:11 AM

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