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Thread: P380 satisfaction

  1. #1
    Join Date
    Aug 2017
    Posts
    1

    Default P380 satisfaction

    Months ago I purchased a P380, shot it through the "break in" period and it only got worse. Multiple types of failures out of every mag. I was quite frustrated and expressed that here. I sent it back to Kahr, got it back, and after a few months, finally got to the range. I had every intention to trade it as partial payment on the new Sig P938 We The People. I take back every bad word and thought! 200 rounds, 4 types of ammo and not a single malfunction. Kahr says they polished the extractor. Sorry if I offended anyone earlier. I had been sold on Kahr, having fired others and dry firing mine and was very frustrated. So what's next a K40?

  2. #2
    Join Date
    Feb 2010
    Location
    North Central Washington
    Posts
    2,384

    Default

    I'm glad they got it sorted! They are sweet shooters. Enjoy.
    Aftermarket accessories for Kahr Pistols at https://lakelinellc.com/
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  3. #3
    Join Date
    Aug 2014
    Location
    OK
    Posts
    490

    Default

    excellent report !!!! stoked its worked out for ya... love my pm9 just wished my cw380 would get up to par,love the gun regardless but would also like to be able to carry it someday..
    RIP Muggsy

  4. #4
    Join Date
    Apr 2016
    Posts
    1

    Default

    The extractor is indeed the issue. I am a retired engineer, and became interested why my CW380 had such trouble going into battery -- the common problem where a thumb nudge is necessary. By taking the slide and a case and looking at how the case goes from the angle and position it is presented by the mag to under the extractor and in battery position over the case imprint on the slide boltface, the problem is apparent. The extractor spring is significantly compressed, and so the extractor tension does not vary greatly with the lateral position of the extractor hook, yet to get into position on the boltface the extractor must be significantly deflected from its resting position, and the spring resistance to that deflection and poor mechanical advantage converting recoil spring force to upward motion of the barrel and case make that very difficult -- hence the tendency to hang. Ideally the resting position of the extractor hook at the tangent to the rim should equal the distance from the case extraction groove bottom to the opposite wall of the slide, and also there is no point in the extractor hook being deeper than the case extraction groove.

    According, I found that if I took a 3/8" end mill and cut into the extractor at the case tangent point I could reach a point where both: a) the distance to the left slide wall equals the extraction groove to far side of the rim dimension; and b) there is still enough extractor depth at the tangent point to reach the bottom the the case extraction groove. Note that after doing this the extractor also grips the rim for a longer distance above the tangent point. The mill was them moved down the extractor so that the profile below the tangent point was the same as at the tangent point, all the way to the bottom. The last mod is to note where the extractor last engages the rim below the tangent point when it is in battery, and taper the extractor depth with a file from there to zero depth at the bottom.

    The resulting modified extractor has approximately the same rim engagement area, owing to the greater depth above the tangent point making up for the lesser depth below. Functioning is much improved, and battery is attained even when releasing the slide slowly by hand from lock-back.

    I won't, however, call this fait accompli until more extensive range testing is completed, which I will do soon. This posting is meant to nudge Kahr into taking a look at improving the 380 extractor, for all users.

  5. #5
    Join Date
    Sep 2010
    Posts
    5,465

    Default

    Quote Originally Posted by k2ue View Post

    Functioning is much improved, and battery is attained even when releasing the slide slowly by hand from lock-back.
    .
    My new CW380 will do the above but in looking at pictures of the cw380 posted by others my extractor sits a bit more forward of the breech face than some others do. Also my extractor seems beveled where it picks up a round from the mag. So as you well put it its an extractor issue on some of the .380's.
    The only thing better than having all the guns and ammo you'd ever need would be being able to shoot it all off the back porch.

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  6. #6
    Join Date
    Jun 2014
    Location
    Charlotte, NC
    Posts
    265

    Default

    In one of these threads I had reported Kahr had modified the extractor to improve feeding. Probably 6 months or so ago. Not sure exactly what they did as no one has checked old vs new.
    Kahr P380
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  7. #7
    Join Date
    Aug 2017
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    103

    Default

    I called Kahr when I first bought my CW380 and was having feed problems. I thought my extractor was broken because of the angle of it.....which it was not. I gave them my serial number and asked if there have been any factory mods to the CW 380 since mine was manufactured....he said no. Mine is RL 31XX

  8. #8
    Join Date
    Aug 2016
    Posts
    333

    Default

    Having recently aquired a pretty good size stash of Perfecta 380 ammo, I decided to try to get my CW380s to be able to feed this ammo.

    Having already watched the extractor mod that was posted on you tube, I figured I'd give it a shot.



    Looking at my extractor, I noticed that Kahr had already ground the bottom edge of the extractor claw that Mr. Beck had rounded off in his video. It wasn't rounded, but rather ground off at an angle. This still wasn't enough to get Perfecta ammo to feed properly.

    I wound up doing Tigman's extractor mod, and took off .010 from the inside of the extractor pivot post. This worked like a charm, and now I can slingshot a round into place even with Perfecta ammo. As of today, I now have 300 rounds of Perfecta through my CW380's with no more issues.

    Hopefully, Kahr has figured this out as well, and incorporated these changes in to the production line...

  9. #9
    Join Date
    Aug 2017
    Posts
    103

    Default

    took off .010 from the inside of the extractor pivot post .....I'm lost on this part.

  10. #10
    Join Date
    Aug 2016
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    333

    Default

    Quote Originally Posted by mark7mod0 View Post
    took off .010 from the inside of the extractor pivot post .....I'm lost on this part.
    Professor Greg made a typically awesome illustration of this...


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