Posted: 2/9/2014 11:24:24 PM EDT
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Hard to believe it, but the new P07 I got in trade last year finally got it's first range trip. I had 200 rounds of inexpensive factory 9mm ball ammo, American Eagle (Federal) and MFS. The gun was comfortable, accurate and has a great trigger, but unfortunately I had 4 FTFs (failure to feed) with it. It happened with both ammo brands and with both magazines that came with the gun. It was the same every time, the round just didn't lift high enough to get onto the feed ramp. A slight rearward pull of the slide and release and the round chambered. It's disappointing, but since the gun is brand new it's not a big deal. I'll get another few hundred through it and if it continues I'll call CZ and see what they say. I'm looking forward to getting back out in a week or so and put another hundred or so through it. Anything in particular I should do before the next range trip, or watch for while I'm there? Needless to say it's been cleaned and oiled and I'm not prone to limp wristing.
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Same round every time (as in last round, first round, etc)? How many rounds are you loading into the magazine. CZ did update the magazines. The older style are blued, the newer ones are black?? When I first got mine, it did not like my light target loads. It really like the more powerful full house ones. Now that I have it well broken in, feed is fine with anything.
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Give it time to fully break in. Some people will take their new ones and lock the slides back and store them. It gets the new tightness out of the recoil spring. Something to think about.
I have been a CZ fan for a lot of years, both rifles and pistols, and I have learned a couple of things: CZ makes fine firearms that work. And, if you do have trouble with a CZ, the guys at CZUSA really work hard to make it right. |
| I am a big believer that modern guns shouldn't need a break in period but the truth is sometimes they do (they are machines after all). I wouldn't worry too much about some FTF in the first 400 rounds. After that, more than a very occasional occurrence that you can readily link to really crappy ammo or a bad mag that is consistently bad would worry me greatly. |
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Thanks for all the responses, sorry it's taken me a few days to get back to the thread, I've been really busy with work. The FTFs were all random, no particular mag or round number. I'm going to try to put a couple hundred more through it next week, hopefully it will break in and start running right. If I get 500 through it and it still has problems I'll call CZ at the number above. I'll keep you posted.
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| The industry standard for "acceptable" performance for a new firearm is 98%. In other words, two failures out of every 100 rounds. As for break-in, some guns just need it. Parts need to wear into each other and make things slide easier. It really does matter. Even new, better machined parts still need this, they just normally need less of it than they use to. |
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I was having some issues with a brand new P-07 40 S&W, posted about it here. I had 8 failure to loads out of 400 rounds, and several times the slide locked back with rounds still in the magazine.
I called up CZ and sent the gun in. I was impressed the turnaround time for me was 2 weeks. It will be a while before I get to test it out again but the paperwork I got back said that they: adjusted feed ramp, deburred/polished breech face, adjusted slide stop, repaired trigger bar spring and then test fired it. Sounds like a lot. We'll see, I really like the pistol so hope that fixed it all. |
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Could you be more specific about this? Is there something you can cite? I find this interesting. Quoted:
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The industry standard for "acceptable" performance for a new firearm is 98%. Could you be more specific about this? Is there something you can cite? I find this interesting. taggage |
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The P-07 and P-09 pistols are tighter from the factory than most polymer guns. There is some rubbing of the polymer on the slide also. This initial friction slows the slide down some initially but will clear up, usually by 500 rounds. But the gun will be very accurate and reliable after the initial break in. In my opinion, much more accurate than the typical service gun.
I use low power factor game gun ammo almost exclusively in a P-09. This is weak stuff. The gun was too tight to cycle with it when new so I put a Glock 11 lb recoil spring in it and keep it wet and it hasn't had a blip in 5k rounds. And it is documented to be extremely accurate. Joe |
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Could you be more specific about this? Is there something you can cite? I find this interesting. Quoted:
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The industry standard for "acceptable" performance for a new firearm is 98%. Could you be more specific about this? Is there something you can cite? I find this interesting. This number I got from one of the manufacturers I was dealing with. I was talking to a firearms designer of a rifle I was testing about reliability. He was talking from an engineering stand point as to at what point they considered something a problem on a new firearm. I got a similar response from another individual who worked in QC at a major manufacture so the number seemed reliable enough. In both cases I was specifically speaking about performance during the first few hundred rounds and about how much "break-in" time a new firearm needed and at what point did the company concede there was an actual problem. This was a year or two ago so it had to have been either a "Brand C" or a "Brand T" person as those were the two main pieces I was working on at the time. In most industries policies and guidelines are set and for good reasons. The 98% number seems pretty reasonable. I don't think many manufactures would be too quick to warrant 100% reliable operation on a brand new firearm. After all, there are so many random factors, like ammunition, that are completely out of their control once a piece is in a customer's hand. But again, this number is for a BRAND NEW firearm that isn't "broken in" so it has nothing to do with a "seasoned" firearm. I think if you buy most any new firearm and told them it had one misfeed in the first 50 round box of ammo they would tell you to shoot it some more. One round in 50 would mean the firearm was...you guessed it....98% reliable. And, last but not least, during break in a wise owner would want to try vaious ammo selections to insure that their favorite loads do in fact function properly.. Like most, I have had a firearm that was 100% reliable with Brand "W" ammo not work well at all with Brand "R" ammo or with different bullet designs or loads from the same manufacture. But, that is where the 98% number comes from. I doubt you will find it written down anywhere so take it with a grain of salt. Meanwhile, should you but a new pistol and you have one jam in the first box or two of ammo call the maker of the piece and see what they tell you. Have a nice day! 
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