Stovepiping

[safecz]

I have a new cz75 P-01 9mm and have shot approximately 550 rounds through it. I've had about 6 stovepipe events, several with the new round stuck on the feed ramp just about at the point where the fresh bullet enters the barrel, and one where the fresh round was in contact with the spent round trying to back out of the barrel ( about half way out). While there is always the chance of "operator error", I do have professional training and about 6K rounds of experience, so I think the chance of a limp wrist is slim. Any ideas out there?

[ocny17]

Hmm... can't think of anything but perhaps a recoil spring being heavier than needed for standard pressure ammo?

[cntrydawwwg]

Welcome to the forum Safecz.
   What ammo were you using?
Is it possible that the slide rails were too dry?
   Ocny mentioned the recoil spring, and you ruled out limp wristing, so I can't think of anything else offhand.

[RhodyCZ]

Being a brand new gun and the fact that it has done it from the start, it is tough to narrow down especially without benefit of seeing the gun.  If it was my gun, I would clean and lube it, purchase some different ammo and use the other mag. If it still does it then I would send it back under warranty. Once you rule out lubrication, mag feeding problem and bad ammo, then it still may be something as simple as a bad spring however I would be concerned that the frame or slide may be slightly out of spec.  That's where CZ can make it right.  Your experience certainly is not the norm.

[Grendel]

Weak extractor spring or damaged extractor hook.

[schmeky]

Almost always a recoil spring.

[bigdave24]

Too strong a recoil spring, schmeky?

[safecz]

Thanks to all for the suggestions. I'll try to isolate the problem but am not above the "shotgun" approach also. The first few stovepipes were with brand-new Blazer Brass rounds (250 of them). The gun has been cleaned at "0", 150, 300, and 550 rounds, and always after the day's shooting. The recoil spring does seem strong, but I'm new to CZ and the limited gripping area on the slide, so my judgement on the strength might be wrong.

[ZardozCZ]

Might park the pistol with the slide locked back when not using it.

[safecz]

Thanks for another good suggestion. I also took it to a gunsmith today and he failed to find any glaring problems. He said to try different ammo, and there's a chance that it might "straighten up and fly right" after breaking in with some more firing.

[copemech]

Word has it they are set up at factory to handle +P ammo. I have only had a few similar issues with nine, throwing whatever cheap junk through it for break in and practice yet I am planning upon going with a little lighter recoil spring, cannot recall the numbers now but CGW has them.

[copemech]

Best tuning is based upon ejection distance with these it seems.

[CZTom]

Ejection distance should be about 8 to 10 feet.  I have had springs with cartridge ejection distances up to 20 feet, and still had no ejection problems.  Like someone said, possibly the extractor or extractor spring, or sludge in that area may be the problem. 

I mostly shoot non+P and have not had your problems, with those or the +P rounds.  Some bullets have a larger "nose" diameter than others, and CZs have tighter "headspace" clearance than other brands, which also contributes to their accuracy.  But with less forward clearance in the chamber, that means less "tolerance" to such things a the "nose" diameter and also residue build up.  For a 9mm, in some CZs, I don't use 147 gr hollow points for that reason.  115, 124, all work good, and 147 round nose okay also, but 147 HP is too "wide" at the nose and catches on the feed ramp going up.   

Hope this might help.

[safecz]

Good points. My ejection distances have probably been  in the 15 to 20 range. I had two more stovepipes today, one with a fresh round stoping at about the point where the bullet touches the inner top surface of the barrel firing chamber, and the other with a fresh round entering the barrel while another was on the feed ramp. Good notations about the headspace issues in cz's.
        A second gunsmith felt that the trigger is atrocious and that the ejector is probably questionable. I went ahead and left it with the 'smithy to work on because we at least agreed on the trigger action.  Let's see if there are any favorable changes next week.

[cache]

What type of ammo are you using?
I had a lot of issues with stovepipes and failures to eject when using aluminum cased ammo.