Brand new CZ-75B jamming issues

[bang bang]

i didnt look at the vids.

But what comes to mind and not in any order.

> limp wristing
> ammo

If you have done any mods to the gun that would be great to know.


edit to add.

> could be mag related too.

[Tobuk]

Both my CZs had a little trouble with 115 grain cheap ammo when they were new. I shot 124 grain NATO rounds as well, when the guns only had a few rounds through them, and those functioned fine, no issues. After a few hundred rounds, they would both cycle with the 115 grain ammo. I've since put lighter recoil springs in both, and haven't had any issues since.

[Jesse1904]

Came from the range again,  used WWB ammo 115 grain.

200 rounds, it jamed on me once, and my friend once.

https://youtu.be/RvAu7qMyHhY

I'm going to use the warranty and send it back to CZ to get it fixed. hopefully its a quick turn around.

[1SOW]

Just another thought:  Did you notice if the jams were all from the same mag or both mags?

Where/How far away are your spent cases dropping?

[Jesse1904]

it happened on both mags.

my spent casings are usually flying out, hitting the wall or going into my hoodie/etc.

[Jimmybeamer]

I have the exact problem with my 85. It drove me nuts, I went to 2 gunsmiths and it wouldn't come right. I replaced the extractor and greased the rails and worked off the tightness from the new spray and voila it works like a sewing machine haven't had an issue since

[Grandmas_Boy]

Google WalMart ammo problems, probably has to be at least a million hits for this.  I refuse to buy anything at Walmart, let alone ammo as their 'everyday low prices' really just means we forced the manufacturers to cut corners with their product to sell it to us cheaper.

[donp326]

Came from the range again,  used WWB ammo 115 grain.

200 rounds, it jamed on me once, and my friend once.

https://youtu.be/RvAu7qMyHhY

I'm going to use the warranty and send it back to CZ to get it fixed. hopefully its a quick turn around.

Winchester White box 115 gr stuff are low power loads.  Commonly used to on older ie WII P.38's so as to damage them.  I carry +P in my CZ-75 pre B and it has a Wolf 18 pound spring in it.  The pistol has never has jammed shooting those.  My reloads are hot too and I have never had a jam with them either.  Shoot a magazine with of some flavor of +P ammo and see it you still getting stovepipes etc.  Then think about sending it back to CZ.

[jwc007]

Winchester White box 115 gr stuff are low power loads.  Commonly used to on older ie WII P.38's so as to damage them.  I carry +P in my CZ-75 pre B and it has a Wolf 18 pound spring in it.  The pistol has never has jammed shooting those.  My reloads are hot too and I have never had a jam with them either.  Shoot a magazine with of some flavor of +P ammo and see it you still getting stovepipes etc.  Then think about sending it back to CZ.

None of my three Walther P38's have ever had a problem from lower powered ammunition, such as Winchester White Box.  I seriously doubt that shooting +P level ammunition will cure the OP's feeding problems and continuous usage of +P level ammunition will only serve to shorten any Pistol's Service life.


WWII P38 and 2 Post War P38's

[donp326]

Winchester White box 115 gr stuff are low power loads.  Commonly used to on older ie WII P.38's so as to damage them.  I carry +P in my CZ-75 pre B and it has a Wolf 18 pound spring in it.  The pistol has never has jammed shooting those.  My reloads are hot too and I have never had a jam with them either.  Shoot a magazine with of some flavor of +P ammo and see it you still getting stovepipes etc.  Then think about sending it back to CZ.

None of my three Walther P38's have ever had a problem from lower powered ammunition, such as Winchester White Box.  I seriously doubt that shooting +P level ammunition will cure the OP's feeding problems and continuous usage of +P level ammunition will only serve to shorten any Pistol's Service life.


WWII P38 and 2 Post War P38's

I just recomended one mag worh of +P to see if that would still produce the jams.  In a gun designed for +P rounds thos rounds will not shorten that guns life appreciably.

[dlidster]

I don't have the answer to your problem, but I doubt there's an issue with "light loads" in WWB or other "cheap ammo." I run nothing but handloads in my two CZ 75Bs and four Beretta 92s. I load to just exceed the required "Power Factor" of 125 for USPSA and IDPA. My loads of PF 130 are 124 gr bullet at about 1050 fps. This is lighter than any 9mm factory ammunition.

I have no problems with this load in any of the six guns mentioned, nor in two LC9s. All have factory recoil springs. I'm talking tens of thousands of rounds.

[jdgray]

Winchester White box 115 gr stuff are low power loads.  Commonly used to on older ie WII P.38's so as to damage them.  I carry +P in my CZ-75 pre B and it has a Wolf 18 pound spring in it.  The pistol has never has jammed shooting those.  My reloads are hot too and I have never had a jam with them either.  Shoot a magazine with of some flavor of +P ammo and see it you still getting stovepipes etc.  Then think about sending it back to CZ.

None of my three Walther P38's have ever had a problem from lower powered ammunition, such as Winchester White Box.  I seriously doubt that shooting +P level ammunition will cure the OP's feeding problems and continuous usage of +P level ammunition will only serve to shorten any Pistol's Service life.


WWII P38 and 2 Post War P38's

I just recomended one mag worh of +P to see if that would still produce the jams.  In a gun designed for +P rounds thos rounds will not shorten that guns life appreciably.

He had 4 jams in 500 rounds fired, very good odds a mags worth of anything would fail....
Fwiw, I have never seen a CZ with a strong enough recoil spring for weak ammo to stovepipe. My brass always lands 20' away, or more.

[Jesse1904]

Hmmm, I'm going to try to weaken the spring by keeping the gun slide locked back to see if this helps.  I will try what others mentioned of replacing the spring to a weaker one to see if it might help.

The turn around time to send it to CZ is almost 1-2 months.  I will try quicker fixes first before sending it to them.

[Jesse1904]

Were the jams like the ones I had? If so a 12 pound recoil spring fixed everything.

http://www.czfirearms.us/index.php?topic=70974.0

I don't see a 12lb spring on CZ custom, only a 13lb and 11lb.

[ocny17]

Just an FYI, springs won't lose their stiffness by keeping them compressed.  They weaken over repeated compression/expansion.  Now, although I did not replace the recoil spring on my 75B Omega, I did replace the one in my P-07 to the 15-lb recoil spring from CGW.  (I don't shoot as often as others, so I wanted to accelerate this process.)

Probably a quick yet inexpensive possible fix is to get a slightly lighter recoil spring:

http://www.cajungunworks.com/spring_kits.html -- towards the bottom, $6 each + shipping.

Word of caution: don't get the very light recoil springs unless you're going to replace additional parts (i.e. extended firing pin for starters).