K40 Barrel Pitting Affecting Accuracy?

[KahrOnTheFly]

OK Kahr gurus... I need your advice and comments about this issue.

To begin, I bought this K40 back in January (2013) and I have noticed that it has been getting progressively less accurate. At first, I thought it was me just shooting with poor form. Then, I decided I needed to rule out most of my "human error", so I shot from a rest over three ranges visits. My spread seemed to get wider and wider over these visits. Keep in mind, when I first put the first few hundred rounds through this K40, it was a total tack driver. I was amazed at how accurate this pistol was.

To add, a good friend of mine (who is a much better shooter than me) marveled at how accurate this pistol was at a range visit back in February. Then, he shot with me again a week ago and asked to shoot my K40 again. I said nothing about the recent issue with accuracy, and he ended up shooting a wide spread as well (trending low-right). He looked at me and asked, "What happened to this gun?" I did not have an answer.

So... I decided to take a closer look at what might possibly be the issue. So, I have done some macro photography of the internal barrel rifling. I was shocked to see what looks like pitting in the rifle channels.

Please take a look at these photos and let me know if this is pitting / breakdown of the metal/coating,... and if so, could this be my issue with wandering accuracy of late.

Thanks in advance for your comments...

http://i1281.photobucket.com/albums/a513/LoadedFly/Kahr/IMG_4969_zpsf1127821.jpg

http://i1281.photobucket.com/albums/a513/LoadedFly/Kahr/IMG_4967_zps8571261c.jpg

http://i1281.photobucket.com/albums/a513/LoadedFly/Kahr/IMG_4962_zpsa65e432d.jpg

[gb6491]

Have you been shooting any lead bullets through it?
Regards,
Greg

[JFootin]

Send the pics and your words to Kahr CS by email. You have presented clear evidence that the gun has developed a problem that they need to look at.

[KahrOnTheFly]

Have you been shooting any lead bullets through it?
Regards,
Greg

I have only been shooting FMJ factory brand ammo. So, I am quite sure it is not lead fouling.

[TucsonMTB]

Are you still shooting the same lot number of ammo that was so accurate in the past?

Do you usually run a dry patch through the bore after cleaning?

[jocko]

send photos and email to kahr attn: jay.

Not sure how muc it would or would not effect accuracy either. Get their feed back. I would think u could just send the barrel back, but again let them tellyou that part. If they want the entiere gun, then ask if they willissue a pickup on the gun. If they just want the barrel ur only out aobut $8 to send it back regular mail. posted. My thoughts are possably this has been this way from the git go as I don't see how the ammo should be doing it, so IMO I am alittle relunctant to say the barrel is the cuase of ur shootin inaccuracy now. thats just my 21 cents on this matter.
again our opinions are secondary to what kahr is gonna tell u.

[b4uqzme]

So sorry to hear about your problem. I just picked up a 1998 vintage K40 and was marvelling at how clear the bore is. There must be an issue and please let us know what Kahr says. Good luck.

If a man says something in the woods and his wife isn't there to hear it --- is he still wrong?

[CJB]

That is not effecting accuracy to any measurable degree.

Example - my 1911, no A1 etc... has a terrible barrel, but is fit fairly tight, and still shoots ok, as well as any run of the mill 1911A1 with a good barrel.

[Alfonse]

First, those are great pictures. I'd tell you my PM9 doesn't look like that, but since I have never seen the barrel blown up to 3 inches across, I really can't say.

But, in true life size, I can't see any defects like those.

My guess is that you have a barrel with issues in the nickel plating. Either that or you are cleaning it with sandpaper (that last bit was a joke) :)

[lamppa]

i would bet if you spent 150.00 on a new barrel, you would waste the money.

something else happened. the sight got hammered, whatever.its somehting else.