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Thread: CW9 firing pin & chamber questions

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  1. #1
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    Default CW9 firing pin & chamber questions

    Bought a used cw9 4 days ago, it was made 4/11. Shot it this morning, about 95 rounds, 50 Blazer, 20 Cor-Bon, 25 Fiocchi. Upon inspecting the empty brass, all exhibited firing pin drag tails. That mark on the primer hit that tails off indicating the firing pin has not retracted when the breach begins to open and the barrel drops. I guessing I'm missing a small spring that returns the striker back. Anybody else seen this?

    Second, Fiocchi brass, the majority of them were split! 1/2 - 3/4 of the case length. None of the Blazer (alum) or Cor-Bon did this. Upon comparison, unfired shells (3 brands), all fit very loose in the cw9 chamber. I hauled out a S&W 59 for comparison, that fit was much tighter, albeit, perfect. Is this a design trait to allow for more reliable feeding? Anybody looked at theirs?

    Functioning is spite of these issues was good, only one FTC, quickly fed by "burping" the slide.

  2. #2
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    Default

    The Kahr design does NOT include a spring to retract the pin on the front of the striker that hits the primer.

    As a result, the striker does not retract and drag marks on the primer are just a normal result.

    In other words, your pistol is behaving normally in this respect.

    It's harder to say why your used pistol's chamber is larger than your other brand of pistol. Normally, the complaint with Kahr chambers is that they are a little tight compared to other brands. I suppose it is possible that the former owner may have loosened up the chamber trying to improve feeding.

    Welcome to the forum! It's good to hear that your pistol is working well, despite the possibly loose chamber.
    It would be so nice if something made sense for a change.
    -- Alice in Lewis Carroll's Alice's Adventures in Wonderland

  3. #3
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    Default

    Fiocchi brass is craptastic. If that's the only brass cracking,don't worry be hoppy.

    The primer drags happen on my cw9 and cm9 and to some extent the g19

  4. #4
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    Default justmy 21 cents

    Quote Originally Posted by jeffy56 View Post
    Bought a used cw9 4 days ago, it was made 4/11. Shot it this morning, about 95 rounds, 50 Blazer, 20 Cor-Bon, 25 Fiocchi. Upon inspecting the empty brass, all exhibited firing pin drag tails. That mark on the primer hit that tails off indicating the firing pin has not retracted when the breach begins to open and the barrel drops. I guessing I'm missing a small spring that returns the striker back. Anybody else seen this?

    Second, Fiocchi brass, the majority of them were split! 1/2 - 3/4 of the case length. None of the Blazer (alum) or Cor-Bon did this. Upon comparison, unfired shells (3 brands), all fit very loose in the cw9 chamber. I hauled out a S&W 59 for comparison, that fit was much tighter, albeit, perfect. Is this a design trait to allow for more reliable feeding? Anybody looked at theirs?

    Functioning is spite of these issues was good, only one FTC, quickly fed by "burping" the slide.
    , u got some bad fiochhi brass, more than likely. Bein the utters did not do this consider it the ammo and certainly not the gun. the firing pin like they stated is normal. It is enertia and when the slide retracts to empty then and only then is the firing pin retracted back by te cocking cam. Until then it is like a limp d!ck, which as u know causes no harm. Ur gun is good to go, just shoot it like u stole it... Never compare on makers chamber to anutter, ..

    If yhou had gotten the kahr manual or pulled up the kahr manual on their webb site it talkes abou the primer swipe. Your glocks do that to...
    . My PM9 has over 40,000+ rounds through it, and runs much better than an illegal trying to get across our border


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  5. #5
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    Default

    In a Kahr pistol the striker isn't retracted until the slide comes forward to strip the next round from the magazine. It is retracted mechanically to a preloaded position and prevented from going forward by the striker block. Your gun is performing exactly as it was intended to perform. Primer smear is normal.
    Never trust anyone who doesn't trust you to own a gun.

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  6. #6
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    Use Fiocchi ammo all the time..................never had that issue.

  7. #7
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    Default

    Thanks for the information, especially the firing pin/striker drag. That I can live with. The chamber, no so much. Perhaps the original owner(s) reamed it out for some reason. Wiggly shells are not much fun. I realize there would be some variation between manufacturers, a thou or 2, OK, however there are specification tolerances and this has some serious wiggle. If I had a very strong light maybe I could see evidence of reaming. The Kahr is now back at the dealer for his smith to look at, especially since I paid top dollar for it. This may explain why at seven yards hits were not predicable. Incidently, my G21 does not drag it's striker.

  8. #8
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    Default

    Quote Originally Posted by jeffy56 View Post
    Thanks for the information, especially the firing pin/striker drag.
    Glad we could help. The pin drag is a surprise to a lot of people.

    Quote Originally Posted by jeffy56 View Post
    The Kahr is now back at the dealer for his smith to look at, especially since I paid top dollar for it.
    Having a local dealer to help is a good thing. It will be interesting to hear what he has to say.

    Quote Originally Posted by jeffy56 View Post
    . . . at seven yards hits were not predicable.
    I hate it when I have to agree with Jocko (just kidding) but, there definitely is a learning curve with the Kahr platform.

    By way of example, my wife and I just recently started shooting a couple of J-frame S&W revolvers. Their trigger pull is as long as the Kahr trigger, but heavier. I shot the target below after about 500 rounds of practice. I would be embarrassed to post any of my early targets where some of the rounds were not even on the paper.



    Yes, I can easily shoot as well with my Kahr. But, you would expect that after more than 2,000 rounds of practice.

    If you stick with it, you will get there too . . . unless you take shooting lessons from Jocko.
    It would be so nice if something made sense for a change.
    -- Alice in Lewis Carroll's Alice's Adventures in Wonderland

  9. #9
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    Default

    Quote Originally Posted by By way of example, my wife and I just recently started shooting a couple of J-frame S&W revolvers. Their trigger pull is as long as the Kahr trigger, but heavier. I shot the target below after about 500 rounds of practice. I would be embarrassed to post any of my early targets where some of the rounds were not even on the paper. :o

    [IMG
    http://viewsfromtucson.com/wp-content/uploads/2013/10/Federal-Hi-Shok-Target.jpg[/IMG]

    Nice S&W, good grouping! Nothing wrong with a .38 at conversation distance. I have 2 DA revolvers, an old .38 S&W police and a .22 Colt police target from my grandfather. Their not asthetically great, function very smooth, but I rarely shoot them. I'm more of an auto pistol guy.

    The long trigger of the Kahr is smooth and no I'm not proficient with it yet. I'm more used to the short reset of my Glock ,the 559 in SA, or even my .357 Blackhawk SA. In fact I am somewhat concerned about habit and transition from one to the other.

    As far as chamber sloppyness, this used cw9, is the loosest I've ever seen on anything! You could wiggle a cartridge side to side 4 - 6 thousandths, OMG!?! From all I've read, and people I've talked to, that's one more variation contributing to inconsistant accuracy. Sure the shell will seat on the shell rim, but off a 10 thou or 2 each time. So now the bullet mass starts off slightly out of line with the barrel.

    Ya, I've shot some sloppy 1911s. The ones we were issued for qual. in the Corps (mid 70s) would be lucky to group 6 - 8 in. at 25yds. No doubt WWII or Korea, rebuilds. They always functioned though. Negatively colored my opinion of 1911s for years.

    You guys are funny, no satire. A pleasure to converse with right minded individuals.

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  10. #10
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    Default that almost

    Quote Originally Posted by TucsonMTB View Post
    Glad we could help. The pin drag is a surprise to a lot of people.


    Having a local dealer to help is a good thing. It will be interesting to hear what he has to say.


    I hate it when I have to agree with Jocko (just kidding) but, there definitely is a learning curve with the Kahr platform.

    By way of example, my wife and I just recently started shooting a couple of J-frame S&W revolvers. Their trigger pull is as long as the Kahr trigger, but heavier. I shot the target below after about 500 rounds of practice. I would be embarrassed to post any of my early targets where some of the rounds were not even on the paper.



    Yes, I can easily shoot as well with my Kahr. But, you would expect that after more than 2,000 rounds of practice.

    If you stick with it, you will get there too . . . unless you take shooting lessons from Jocko.
    looks like my model 342. super nice gun. I should have never sold it.
    . My PM9 has over 40,000+ rounds through it, and runs much better than an illegal trying to get across our border


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