My CW.40 KAHR jams repeadedly

[Ironworker]

I bought a CW.40 Kahr couple days ago. In operating manual it says to fire 200 rnds through it before it can be considered reliable. Well I've done that 165 gr FMJ and 180gr FMJ. If I load 4,5,or 6 rounds ,when slide is released it half loads the cartridge every time,So I push the slide in and fire it ejects the case but also activates the slide stop and locks the slide back like its empty ? So I depressed the slide stop and again same thing until I get down to 3 rnds in the magazine ,then it fires like it is supposed to. Bang,bang,bang,slide stays back cause slide stop is doing its job. It was like this from the 1st shot to the 200th rnd. I cleaned this gun after first 100 rnds lube it light spraying of  WD 40.  Now if I just load 3 rnds in magazine it functions flawlessly. So what's the problem ?

[Bigeasy]

I'm guessing a bad magazine.  Try a different mag, and if you still have problems, contact the company for a return authorization.
 
Larry

[Backwoods7]

I had a tp45 (key word HAD) it did the exact same thing your talking about. I had two mags both were the same i put about 300 rounds through it but didn change it. Occasionally itd go throu gh a full clip but the next it wouldnt. A friend of mine has a cw40 he had the same problem and had to send his back to kahr 4times before they fixed the problem. Kahr needs to fix there problems google it and youl see its real common. I love the way they feel but there guns will get somone killed by all the jamming. Good luck.

[rawhidekid]

Several of my friends have had Kahr handguns.  I always had trouble shooting them right handed as my thumb would hit the slide lock during recoil;.  Using my left hand as primary, never a problem.  You could try this to make sure it isn't your thumb also.

[mannyrock]

 
   I would try the following:  shoot another 200 rounds through the pistol, but when doing this, keep the slide "wet" with a good grade of gun oil (Hoppes).   It is the slide that is your problem. It will wear in promptly if you shoot it wet, to carry off the microscopic flecks of metal.
   
  WD-40 is NOT a gun oil, and has no place on any handgun. It is a "penetrant" not a lubricant.  It was originally invented to spray on aircraft and equipment, parked outside in the weather, because the molecules are so small that they are smaller than water, and they get "underneath" the water and lift it off. (It also lifts off rust.)
 
  WD-40 is so thin that it runs everyplace it shouldn't be, and then either evaporates or dries into a film.
 
   As the Kahr company will tell you, in 98% of the cases that a pistol is returned for jamming, it is because the customer failed to propery break in the pistol as instructed in the manual.  I had a friend that actually fired his Kahr "dry" for rthe first 200 rounds, and then couldn't understand why his pistol would keep jamming.  I fired 80 rounds through it, keeping the slide wet, and it never jammed again.
 
Mannyrock