New SP01 with (Hopefully) Minor Problems.

[Scfish]

Got my new SPO1 Tactical to the range for a 250 round break-in.  I had 4 FTE's and one stovepipe.  The FTE's do not worry me, but the stovepipe does.  I will see what happens with next 250 rounds, before getting upset.  The ammo was mostly Blazer Brass with 50 WWB's thrown in.  FTE with both brands of ammo.  Stovepipe was with Blazer Brass. Anybody have any suggestions?

Perhaps, the most troubling issue was that the slide consistently failed to lock back on the last round.  I used both of the magazines that came with the gun, and it happened almost every time.  I suspect the magazines, but then does anybody have a different/better explanation I should investigate?

Finally, the gun proved to be much, much more accurate than the shooter.  This is my second CZ, after breaking the Glock addiction.  (I am already plotting a third.)  The first one (75B) had one FTE during break-in.  Other pistols I have owned have had occasional FTE's during break-in.  Thanks for any suggestions.

[mbott]

Frankly, any failure to function within the first 500 rounds in my book, with the exception of firing, is not a big deal.  As to the accuracy of the SP-01, you are correct, It's too easy to be accurate with this pistol.

As to the failure to lock back on an empty mag, try firing a mag with just one round in it while pushing up on the bottom of the mag, just to see if that changes what's happening.

--
Mike

[corey006]

I guess I am lucky.

I bought a "non tactical"  I have 100 rounds of PMC and 300 rounds of remanufactured ammo through it and not one malfunction of any kind, slide locks back every time mag empties for me and yes accurate.

The only thing I did was wipe off packing grease, clean it,  run a few patchs through the barrel, lube insides with CLP and off to the range....

I do give it a general cleaning and wipe down and clean barrel after every 150 rounds( my usual range sesson)...

I live in da "republic of KANADA" so are mags are different up here(10 rounders) maybe there is a issue with the mags you have?

I did, however,  break trigger spring by repeated dry firing in DA mode but it is replaced and all ok now.

[Stuart]

definitely let the gun break in..sometimes things have a way of settling in..

on the mags not locking back..
do they lock back when you just cycle the slide on an empty mag?

on the FTEs..what are they doing..not coming out of the chamber at all?? is the extractor slipping past or is a empty case just staying in the chamber??

[Sportshooter]

I second corey. 5000rds and no failure from the gun besides a broken triggerspring. Best of luck.

[Scfish]

Further Information:  The slide will lock back when I cock the slide manually on a empty magazine.  I will be trying pressure on the bottom of the magazine with a single round when I can get back to the range this week.  The specific nature of the FTE's I was encountering is that they are at least partially extracted from the chamber, but not ejected from the the gun.  This causes inteference with the next round in the magazine and jams the slide partically open as it tries to return to the ready position.

I greatly appreciate the thoughtful suggestions.  I will shoot another 250 rounds at the range this week after another clean and lube job, then post the results.  There are two posssibilities:  (1) Issues will disappear with further breakin or suggestions from the CZForum; or (2) If there is a problem, CZ will handle it.  Either way, I am confident it will be resolved.  Either way, I end up with a superb pistol.

[Stuart]

couple of things to try if you like to tinker..

I found Blazer brass ammo to be pretty light..I think when I chronographed the load it only ran about 1140fps.

possibly try a lighter recoil spring...possible the slide is not coming all the way to the rear to allow the slidestop to engage the slide and lock back..
this also might contribute to the case not ejecting cleanly out..

also might try changing out the extractor spring for a wolffe spring..from various threads..this seems to be a common fix to extraction problems so might worth the try..

might try different ammo and bullet weight..find some WIN 124gr or 147 gr ammo and see if the gun likes it better.

anyway..good luck..the SP01 is a great gun.
both of mine have been flawless..both have action work..one by Angus, the other by Matt Mink..
lighter recoil springs and lighter hammer springs. CZ competition hammer and CZ competition sights.

[Walt-Sherrill]

A lighter recoil spring with lighter ammo is a good suggestion.  But my experience with Blazer is that its typically hotter than most factory 9mm loads.  (It functions in my 9mm Para Hawg when some other brands won't.... they don't have enough ooomph to even feed...)
 
It may just be that you NEED a lighter recoil spring to get slide lockback.  (I'm waiting for new 9mm springs for my SIG 2022, which has a .357 recoil spring mounted.  It won't lock back, either.)

[atblis]

If you spend a lot time trying to figure this out you'll go crazy

Magazines can cause all sorts of problems with an otherwise good pistol.

I've had a new CZ75B bobble a few times in the first 500 rounds or so, and then go 3000 rounds trouble free with no cleanings and the cheapest nastiest ammo I can get my hands on (No amerc though).

Ammunition is by no means anywhere near being perfect.    All of the manufacturers are trying to crank out the cheapest carap possible (with exceptions of course).

This isn't to say your pistol doesn't have problems, just don't jump to any conclusions.

[Matthew Mink]

Stuart (eerw) hit the nail on the head.  You need a lighter recoil spring, or stouter ammo.  The stovepipe is a classic sign of not enough slide movement to eject the spent case.  Also the failure to lock back on empty mags is the clincher.

But then again, it may go away after you shoot the gun in a bit.

[kinsco276]

Matt,

I picked up that SP01 decocker I asked you about for me son yesterday. I lightened the mainspring and recoil spring slightly, very slightly and shot 80 rounds out of it today. It functioned 100%.

Handled the ammo easily, nice shooting gun. Can't wait to get mine from you. This is factory trigger with just a lightened mainspring (2 coils). Took a little off the pull, but not much.

Very accurate though, even with the factory trigger and sights (night sights). After 30 rounds, I shot 5 rounds from 25 yards into an IPSC head. I was actually amazed at myself and the gun. I'm a GM Limited shooter so I know how to shoot, but the group was awesome.

5 rounds, 25 yards, off hand, no rest, bench or anything, just freestyle. A quarter covered 4 rounds and the 5th round (probably first shot fired) was 1 inch from the 4 shot ragged hole. I was amazed that it had that kind of accuracy, freestyle.

After I get my gun from you, I'll send you this one to have a trigger job done on it, but I'll wait a little and let my son get used to this and the safety of USPSA first.

Kevin

[Scfish]

On the basis of the excellent advice people on the fourm povided, I examined several possible causes.

Compared recoil spring on my SPO1 with the one from my 75B that has over 1000 rounds with only one FTE and no other problems.  SPO1 spring appears longer and stronger.  It also has a longer guide rod.  Seems like a significantly different spring setup.  I wonder if a spring intended for the .40 S&W was installed in my SPO1?  I will order a reduced strength spring from Wolff to check this.

Got to range today.  Started with 50 Ranger 127 +P's.  Then shot 50 rounds of 124 blazer brass. Finally shot 50 rounds of 115 blazer brass.  Loaded magazines with 2-5 rounds each time to see if slide would lock back on last round.  Also shot several magazines of each weight of the blazer brass with recoil spring from my 75B installed in SPO1.  Also rotated magazine that came with gun, with one that came with my 75B.  Net result was no, repeat no, FTE's or stovepipes.  However, the slide only locked back on last round randomly a couple of times - once on SPO1 magazine and once on 75B magazine.

So it appears that the only problem left is the issue of the slide not locking back on last round.

Thanks for all the help.

[angus hobdell]

For sure the stock recoil spring that the Sp01 ships with is for stout 9mm ammo.
First thing to do is change it for approx 14lb if you are shooting gafctory or 11lb if you are shooting "minor" ammo.
this will stop all of the mentioned problems.