New Shadow 2 extraction problem

[czshadowman]

Mine had what looked to be more of the factory grease in there than oil. So cleaned the extractor, spring and channel 100% free of all the gunk and left everything dry. Now I'm having 0 failures to extract.

[jurek]

Springs don't need any lubrication to function properly. Most springs has loose fit in their channels, so friction is not a problem, so again - no lubrication needed.

[pepp8621]

Wanted to thank you for this thread. I used your input to hopefully solve the extraction problem with my Shadow 2. After removing the extractor twice for cleaning I installed the 40 S&W spring with about 1 coil trimmed off. The gun just ran a varied group of ammo with only one extraction problem. It was early on with Winchester white box 115gr. If it acts up in the future I'll give a post.

[tdogg]

Springs don't need any lubrication to function properly. Most springs has loose fit in their channels, so friction is not a problem, so again - no lubrication needed.

Well maybe so but they do need corrosion protection.  Also, you should try lubing the main spring,  it does make the da trigger pull smoother in a cz.

Cheers,
Toby

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[jurek]

Well maybe so but they do need corrosion protection.  Also, you should try lubing the main spring,  it does make the da trigger pull smoother in a cz.
Cheers,
Toby
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Yes of course, every metal part cleaned with solvent need protection... but again, "no need for lubrication to function properly".
My point was that spring shouldn't be wet from lube.

[theocho]

Going to keep this thread active.
Shadow is approximately 120 days old. When i first took the gun to the range I used 124gr (some 125gr) and 147gr ammunition.These were my reloads. Halfway through took 115gr factory ammo with me (winchester white box, Blazer, Sig). With the lighter grain ammo failure to extract. Case halfway out of chamber stacked on top of next round, Pull the mag out literally and remove case. This could happen once per mag or twice. Number of rounds in mag doesn't not matter. It happens with all three mags.
So with the help of this forum and Enos I started to slef diagnose (instead of sending gun in for repair}
First the extractor has been out of the gun three times for cleaning. The first time was gummed up with some sort of factory grease. Extractor itself looks fine.
Second I have put the Extra Strength extractor spring. Had to clip a coil off for fitment.
Third I ordered Cajun Gunworks Spring pack (recoil). I have run each spring to the same results.
Mind you this is with factory ammo. So I started measuring COL of factory. They are long. 1.15-1.17. My reloads are in the 1.13 range if not shorter. Yesterday I took 200 of my reloads to the range
115gr Berry's HBRN TP
Winchester case
CCI SPP
4.5 grains of Winchester 231 (1108 fps average through chronograph)
Cases were spotless, Roll Sized with clean primer pockets
They ran flawless.
I loaded WWB 115gr right behind it and the gun jammed repeatedly. Had all the recoil springs laid out . Changed through the lighter ones. Went back to stock. No go.
I look at the extraction failure and i see a round stuck underneath the case to be extracted. The mag is stiff to drop. It has to be dragged out. The slide and extracted case cannot drag accros the round to be loaded. The recoil springs have been run from lightest to heaviest.
Is it time to send it back to CZ.
This is only with lighter grain projectiles. 124 and 147 ran a omplete mag almost 100% of the time.
I suspected the mags at first but since it happens with all three. Tune the mags? Polish the bolt?
I have a spare slide stop, extractor, extractor spring and something I probably can't remember. These parts were purchased after buying the gun as wearable parts not for this problem.

[Rmach]

It's time to send it back. I would have guessed extractor spring since the claw looked good.  I had two guns with exactly the same malfunction, and each one needed a stronger extractor spring to solve the problem. However, each gun had a few thousand rounds through them before the problem started.

[theocho]

This is probably at 1000 rounds

[George16]

So it runs without any problems with “all” of your reloads but jams on factory loads such as the WWB 115 Gr. Did I get that right?

If so, the problems would be the factory WWB ammo and not your gun. Did you do a plunk test on the WWB 125? What was the result?

Are the 124 and 147 Gr ammo factory or reloads?

[theocho]

Well here we go. All "factory ammo " plunk tests. It doesn't hit the lands. The leade seems fine. It spins. That's why I'm here. It wasn't perfect on 124 and 147. It was better. The problem is persistant with 115gr Sig, WWB,blazer, and fiochi. I started swapping recoil springs this last round. I'm going to replace the extractor. If that doesn't work I'm going to send it to CZ.
I can imagine trying to explain it. I think all the ammo when the col is around 1.15 or above crowds the bolt.
I understand some people have no problems with the Shadow2, but even a few on here do.

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[2morechains]

The only problem I’ve had with my pair of Shadow 2’s is one of them about 14 months in had extractor issues at a match.  Replaced the extractor spring and the problem went away.  So extractor spring is one of the things I replace yearly when I also replace the TRS. 

But for it to do it with only 1K rnds in, that seems like there might be something else going on. 

FWIW, I load my ammo to 1.125” using 125 or 135 gr coated bullets.  In some of my other 9mm I can get away with 1.140” before the ogive comes into contact with the rifling.

[theocho]

Factory ogive will plunk at longer col. Speer TMJ 3993 will plunk @ 1.16

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[2morechains]

Factory ogive will plunk at longer col. Speer TMJ 3993 will plunk @ 1.16

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It all depends on the ogive profile of the bullet you are using.  Saying “factory” covers a pretty large area.  Have no doubt Speer TMJ can be loaded longer since it has a narrow ogive. 

[theocho]

The bullets that were fired 115gr Winchester white boxed plunked. Along with 115gr sig elite. The blazer 115gr plunked also. The case would not extract over the next round in magazine. I do not have a picture of the jam. The slide cannot load the next round because the case is left above the next round as the extractor loses it.

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[theocho]

The fault lies the the firearm. My P-09 will fire anything. Along with the 4other 9mm handguns I own. Extraction is not a common problem with the S2, but it seems a few members( including me) are having a problem. Over on Enos there is a thread that suggests a larger spring from a 40 cal.

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