Check your Fiocchi

[Davehb]

Edit: CZ 75B 9mm.
Fiocchi 9mm 124gr JHP.
That little shiny circle is where it’s hitting the rifling before the slide even fully seats. Polished it dropped in and spun it.
Almost had a boo-boo.
Shot about 10. Standard load 124gr.
Thought they sounded a little harsh. Was ejecting casings twice as far as a Hornady +P. Had failure of slide to close. Slide Wouldn’t seat it. Hard pulling slide back to get it to eject. Felt like it had jammed and hung on a bur.

Thought had somehow got grit in the bore. Field stripped cleaned. 3 times. Got a light checked for burs. Some would seat but still sticking. Just cycling shells without firing When pulling back slide to rack another shell. Felt like it was hung up.
Finally decided to try it in chamber of another gun. Same thing. When side would close hard to get it moving to eject the round. All other brands cycle fine.

First time I tried those. Won’t ever again. Now to see if I can return those 3 boxes.

[Wobbly]

Great catch !! Very glad you weren't hurt.

Can you report the handgun this incident occurred in, please.

[Davehb]

[mention]Wobbly [/mention]
I’m glad it didn’t go really south too. Kind of scary when I realized what was going on.
Cz 75B after it finally crossed my mind might be the ammo tried cycling without firing in S&W M&P9 ez and same thing.
Even When they would fully chamber Try to pull slide back it’d feel like slide was locked up then suddenly turn loose.


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[Davehb]

Hornady 124gr on left. Fiocchi 124gr middle liberty 50gr on right  in
The Bottom line is where others neck up to full diameter.
Middle line is where the Fiocchi necks to full diameter.
Top line was a mess up.
Those that did seat in chamber weren’t getting out with my fingers. Had to pry them out.
One in chamber still wasn’t fully In the chamber but was stuck anyway.






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[bonj]

Is the Fiocchi 124g a JHP bullet?

[Davehb]

Is the Fiocchi 124g a JHP bullet?

I forgot to put it.
Yes it is.


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[Davehb]

Just for Informational purposes here’s the lot number. I returned them. I left the one in the barrel so they could get it out themselves and see how bad they were locking up in the chamber. He said they had sold a bunch and I was first one to bring any back. Guessing others haven’t tried them, or don’t know any better. [emoji2373]

[Phyffe]

Gonna have to check all my Fiocchis now. Got a couple of boxes of Black Mamba and Expansion Monobloc (EMB) ammo here at home. (they sure have some diverse ammo types)

[Davehb]

Article I found very informative.


https://czfirearms.us/index.php?topic=114239

Thanks for this @Wobbly

[Wobbly]

He said they had sold a bunch and I was first one to bring any back. Guessing others haven’t tried them, or don’t know any better. [emoji2373]

Or, more proabably, the guns those bullets are being fired in have longer chambers and simply don't have a problem.

[Bret]

Or, more proabably, the guns those bullets are being fired in have longer chambers and simply don't have a problem.

Exactly.  If you're going to have this problem with ammunition, CZ pistols will generally be the first to make you aware.  I honestly don't know why CZ has such short leades.  I really have not found a correlation between a short leades and accuracy.  Over the years I've found ammunition that had this issue in CZ's, but would work without issue in virtually all my other pistols.  Regardless, it's always good to check a new type of ammunition in the barrel that you're going to fire it through.

[Davehb]

He said they had sold a bunch and I was first one to bring any back. Guessing others haven’t tried them, or don’t know any better. [emoji2373]

Or, more proabably, the guns those bullets are being fired in have longer chambers and simply don't have a problem.

@Bret
Quite possible it would work in some others. After you mention I remember  an old ruger P89 years ago they would have probably worked in. It had a lengthier taper. .

From experience I had with those Fiocchi another with short chambering similar to CZ is the Smith&Wesson M&P9 shield EZ. 
Looks maybe a few thousandths more than CZ.
I took in the 2 barrels I’d tested in when returning the ammunition. The smith and Wesson barrel was the one I left shell still stuck in the barrel so they could see just how bad they would lock without even going into battery. This being CZ forum I only photographed and posted CZ. 

Gunsmith had to get a rod and drive it out of the S&W.

The weaker recoil spring on the EZ compounded the problem of slide not going into full battery.
I think if I’d tried those rounds in the S&W first I probably would have ended up with a possible bad OOB firing mishap.
Tried their FMJ 115gr too and didn’t have the issue, but returned them anyway.

[Vuduarms]

Thanks for the information. Glad to hear no damage before you realized what was going on.

[Davehb]

After some testing today I can say I’ll never buy any ammo again without trying the “plunk” in whatever I plan to use it in.
Before this little experience I had never given a second thought that factory ammo tolerances may not allow it to function safely in some guns it’s chambered for. (In my younger days I use to shoot an reload a lot and nothing made me question it.[emoji2373])

Went to school with owner of local shop and stopped to visit today.
They had just got some Fiocchi 9mm FMJ 124gr in stock.   (Ones I had issue with were 124gr JHP.)

I just Had to take barrel out of Shield and try the FMJ fiocchi 124gr.
I think it stuck a little worse than the JHP.
If it won’t work in the S&W it definitely won’t work in the CZ.
Also tried some Remington 124gr FMJ and Sierra 124gr JHP they just got in. Those were perfect.

Fiocchi no longer option in our house.

[Davehb]

Thanks for the information. Glad to hear no damage before you realized what was going on.

Very welcome.
I inspected everything all seems good.
CZ really surprised me.


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