The Original CZ Forum
GENERAL => CZ Gunsmithing => Topic started by: bigj82nd on May 18, 2024, 12:56:42 AM
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I will start off by saying that I love CZ's. Have many models and have never been disappointed.
A "want" on my gun "bucket list", has been the CZ 40 P. Finally, I was able to find one in good condition and not at an exorbitant price.
Took it to the range and had many issues. All related to failure to feeds. It occurred on both magazines while at the capacity of the magazine however, it would happen throughout the magazine not on a particular round number.
Toward the end of my range time, I tried less rounds than capacity and it appeared to not to happen. But I did not have a large enough sample size to determine if it worked. The magazines appear to be in good condition with normal resistance on the magazine.
I am wondering a couple of things...should I polish the feed ramp? Does anyone know of a compatible magazine for the CZ 40 P? Does anyone know where to source the nylon bushing?
Cheers!
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Welcome from Georgia.
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welcome,
you will find a lot of knowledge here on this forum, while there are way more knowledgeable people than me I will start by saying polishing the feed ramp never hurts.
Did you try different ammo or did you only try one flavor? what ammo was it? most important what was the bullet, round nose, FMJ or hollow point?
With the help you will find here I hope you get it figured out?
good luck!
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In a prior thread in the Forum, some people were reporting success and opening up, cleaning the inside of the magazine and then waxing the inside, reducing the friction of the spring and the rounds. It is simple and cheap to try before buying new magazines.
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In my experience with failures in my cz's is the extractor is usually the culprit.
Is it nose diving and hanging up on the feed ramp or is it just not fully going into battery ( hanging up 1/8-1/4 out)?
I'd start by pulling out the extractor cleaning the channel, inspecting the extractor, and reassembling it dry. You can use a rust inhibitor but make sure to wipe excess off. I like the hornady one shot cleaner because it leaves a dry film protectant.
As mentioned, waxing magazines (inside and out) makes them easy to load and water repellant. Make sure the feed lips are smooth and aren't damaged.
You can use any cz75 variant magazine for the 40p as long as it's long enough. The last magazines I purchased for my shadow 2 were both 9mm and 40S&W. Compact magazines with the SP01 type magazine base is what comes with the gun.
Finally you may need a heavier recoil spring. I'm running a 18lb that I trimmed a coil it two off of. It's just a standard cz75 recoil spring from Wolff gun springs.
Cheers,
Toby
Sent from my motorola edge (2022) using Tapatalk
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Polishing things, especially the feed ramp, isn't a helpful way to go. It is not. In this case the OP has purchased a used gun. Unless he is lucky there is no paperwork indicating what work has or has not been done by the previous owner(s). What problems did the original owner have that made him sell this pistol? Before tweaking and polishing the right thing to do is to return the gun to stock - springs and custom parts. That goes double for returning the extractor spring to its stock value. Then, by taking notes he can get to a detailed problem description. I'll be interested in some photos and results after the pistol is returned to original.
OW
p.s. the extractor's main job is to hold a fired case against the breech while allowing the ejector to place kick it out of the gun. The fired brass should not need to be ripped out of the chamber. If it does, then there is a serious timing issue - or else the cases are steel or aluminum. I would rather take a good look at the kidney shaped cam thing and consider a new barrel.
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Polishing things, especially the feed ramp, isn't a helpful way to go. It is not.
Not sure what you are saying here, are you saying polishing the feed ramp should not be done? I have never heard of anyone screwing up their gun by polishing the feed ramp, unless they do it on the bench grinder. I for one polish the feed ramps on all my semi autos, even if no problem exist.
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I also polish feedramps, it makes them easier to clean.
If the extractor hasn't been cleaned properly the loaded round will not feed up the breech face properly and will hang up the last part of feeding.
I forgot to mention the bushing. I did purchase a delrin tube that can be used for the bushing. It just needs to be cut to length. The length is the critical as that dimension what the bushing is there to do and prevents the slide from jamming up in the frame (frankengun). You can take measurements of your bushing and go on mcmaster carr and order a length of tubing. I chose delrin but any chemical resistant polymer should work. I don't think CZ has any bushings available anymore.
Cheers,
Toby
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I had a similar issue with my compact 40. I changed the grips and eliminated my feeding problem, The old grips were causing too much pressure/tension on the magazine causing feeding issues