The Original CZ Forum
CZ PISTOL CLUBS => CZ75, 75b, 75 SAO inc the Transitional => Topic started by: DexterGSP on April 02, 2017, 10:42:25 PM
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I obtained this CZ75 SA new back in Feb. of 2016. Since then I have put a total of 2,157 rounds through it. About 5% of the ammo fired has been factory FMJ rounds, 5% FMJ reloads, and 90% lead reloads. I also circulated 10 magazines through the pistol, 4 CZ mags and 6 Mec-Gar mags.
I use this pistol as a range gun. I was curious how long the pistol could go failure free while not cleaning it. The pistol has not been cleaned at all. The only thing I have done was to put a few drops of oil on the rails and the barrel between shooting sessions.
I was really surprised that there were no malfunctions especially since I used my hastily thrown together reloads. Notice all the gunk and grim in the pistol. That?s a combination of oil, carbon, lead, and bullet lube.
I?m thoroughly impressed with this pistol!
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Are you going to give up and clean it now?
My SA is at 2557 rounds, almost entirely 125 grain lead reloads. It has had 3 malfunctions, all ammo-related.
1) At about 400 rounds: FTE caused by an undersized case rim. We saved the case and measured the rim. After that, I took a hair off the extractor pad. No issues since.
2) At about 1100 rounds: A stovepipe from a load undercharged by potentially as much as .6 grains thanks to Lee's crappy Auto-drum powder measure I was using at the time. I knew I had some undercharged loads in that batch and was surprised the CZ only had a single malfunction as a result.
3) At about 1300 rounds: Failure to feed a round with a severely dinged case mouth. It would not fit into the chamber with the gouge oriented in the position it happened to be as the round tried to feed. Later, I discovered this was caused by the Lee expander plug. The Lee plug doesn't always obviously completely ruin a case when a case doesn't center. It can produce a more subtle gouge deep enough that can't be ironed out by seating and crimping. I wonder how often this has happened before. Serious match shooters check all their reloads in gauges, presumably to rule out this kind of thing.
Overall, pretty impressive considering we use mixed brass with more than 20 different headstamps.
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Maybe time to clean it so you can have a better look see as to how the metal parts are wearing in? No point in keeping it dirty forever -- especially might be nice to remove lead build up IMHO. ???
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Seeing those pictures reminded me of watching 1950's swamp monster horror movies. Not quite sure how I'm going to move past this... :o
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OH brother, Joe L would be proud of you. O0. That is one nasty looking internal shot but very impressive for the brand. Thanks for sharing. What's next, is it going to be the CZ bunny, going, and going, etc?
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Geez, I agree speak to Joe L, he like to see nasty looking stuff. I am impressed with the CZ75 SA, their is a good chance
I will be purchasing one. I am not a DA/SA guy, rather have SA or striker fired. Thanks for the photo's and your report.
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Next time see how long it will function with no lube. It will probably stay cleaner.
Sent from my SM-G900V using Tapatalk
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Mine started to hiccup around 4000 rounds. Did a detail strip and clean at 5000 (mostly because it got kicked through sand.. but also because of extraction issues.). Lots of gunk under the extractor that was causing the occasional failure to extract - but other than that and the sand it was ready to rock.
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Next time see how long it will function with no lube. It will probably stay cleaner.
Sent from my SM-G900V using Tapatalk
Yes! Way too much lube, LOL.
No, please dont turn this into another lube preference thread. Obviosly, the OP believes in a Pb/C/GSR chemical concoction!
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I used several different lubes throughout the last year. What you see is a mix of ATF, Hopes, Tetra, and Ballistol. The pistol ran great regardless of what I used.
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You've been reading to many of Joel's posts.
;D ;D ;D
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Pictures look nasty ;D ;D ;D
That's what I'd like to hear for a combat pistol. Dirty as heck but still functional.
But please clean it now :D
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You've been reading to many of Joel's posts.
;D ;D ;D
Who's Joel?
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You've been reading to many of Joel's posts.
;D ;D ;D
Who's Joel?
A man, a myth, a shooter of bullseyes. He too has been known to go a few days between cleanings.
On another note, interesting post. It looks gooey in there, thank you for the pics.
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I don't keep my guns pristine but I'm twitching just looking at those pictures!
It's pretty cool though that it will still function through all of that.
Thanks for posting!
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Here you go Paul,
http://www.czfirearms.us/index.php?topic=66453.msg452738#msg452738
Joe L is kind of known for his long distance shooting with handguns and his pushing the cleaning cycles like you have done with the SA.
I think his look worse though. ;D
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I will never, ever feel guilty about not cleaning a gun again!
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I tried this with a Ruger SR9c and it started failing around 500 rounds.
Unintentionally I'm doing this with my SP-01 because I just don't feel like cleaning it after every range trip lately. I'm up just over 500 rounds. No issues, but I don't know if I'll push it up over 2k...
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This just once again goes to show just how reliable the CZ design is.
You hear about how a g**k can handle this and that, but look at these guns and they are still shooting
extremely well. Joe was still using his in bullseye competition when it looked like that.
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From an old 11B. Please, for the love of humanity and love for your mama, clean your pistol. LOL My old DI would be rolling over in his grave if he saw this. :o
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Well, Well, Well! I had to jinx it by posting this thread.
flyingbrass and myself went out and did some shooting today. I had two malfunctions while shooting, failure to extract. The first malfunction was at round count 2,327 and the second was at 2,339. Both rounds were a new load I was testing out of the pistol (5.7gr of autocomp, 1.110? oal, 115gr RMR bullets). 5.7 gr. of autocomp is a really stiff load and I suspect the psi was 35,000+ psi. Also, both offending rounds were Winchester cases, which are known for small diameter rims. I measured both rim and they measured .386?. Spec for the 9mm rim is .394? -.010?. So, the Winchester rims are in spec, but not by much.
Variables that led to the two malfunctions:
1. Small rims of the Winchester cases.
2. Dirty chamber (over 2,300 rounds without cleaning the pistol) along with the high pressure loads, which may have caused the cases to stick to the chamber wall.
3. Grim and debris under the extractor causing the extractor to lift slightly out of its intended resting position in the slide.
Anyway, it?s time to clean the pistol. I will completely strip the pistol and let it soak in Ed?s Red for a few days and then scrub the hell out of it.
As of today, the total round count without cleaning the pistol is 2,398 rounds. Really, that's not too bad considering there were only two malfunctions without cleaning in 2,398 rounds using suspect reloads.
Thanks!
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DexterGSP--Your gun isn't dirty. This is dirty. After a bullseye match. That I won. This is from late 2016, two years after the post listed in a reply above. I'll shoot this pistol in the morning. It will run fine.
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The difference is that this is .22 gunk from a Kadet kit and it builds up a lot faster than centerfire gunk. I would spend all my time cleaning the 75B frame if I was in to cleanliness. Futile with the .22.
This frame has nearly 50k rounds on it, and I clean it once a year. Now the barrel, ramp, breech face, firing pin, and firing pin channel, as well as the extractor and magazines get cleaned regularly, since it is a .22. But I've gone 2k-3k on a P-09 without cleaning it at all, just add oil.
Joe
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I'm twitching just looking at those pictures!
Makes me want to take a shower and change the oil in my car. This should be a sticky for what not to do.
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Sheesh. Now I feel crazy for cleaning mine every couple times I go to the range :o My argument is that I carry my PCR and use my SP-01 for home defense, so I want to make sure they're always in tip-top shape. And I'm a
hardcore little bit of a neat freak when it comes to my babies.
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I believe in keeping a home or defensive gun clean and lubed, especially a carry gun. But a range gun that gets 1,000 rounds/month will wear you out cleaning it. The Kadet gets cleaned often, just not the frame parts.
Joe
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I don't carry gun, but HD and rarely used guns are always cleaned and lubed after each occasional trip to the range.
Range and competition guns get quick cleaning as needed, usually few times a year and checked and lubed after few range trips.
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Nice to know the outer limits of CZ crud endurance. Glad it was your gun and not mine! ::)
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Thanks for the report. I absolutely love my SA. It's my favorite CZ I own.
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I've never thought of myself as anal retentive but you guys are killing me. I don't get to shoot anywhere near as often as I'd like to and maybe that's why I actually enjoy sitting and cleaning my guns while enjoying a cigar and a libation.
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I might shoot more, clean more often when I retire. They'll run a long time with lots of residue covering the moving frame parts, as long as the chamber, the firing pin hole, breech face, and extractor are clean. :) :)
Joe