Rough Bore

[upnorth]

Hi everyone,new to the site and Kahr.So last weekend I went and bought a cm 9,got it home cleaned it and headed to the range with 100 rds,not a bad day a few ftf,1 fte and 2 slide didn't lock back.I was not to concerned because I know there is a break in,got home ran a few patches through the bore then called it good.a few days later went back out with 150 rds the gun was really starting to smooth out worked great.Got home and decided to really give her a good cleaning,after i got done with the barrel I looked in the bore and in 3 of the six groves I see these little bumps starting around a 1/2 inch from muzzle almost down to the chamber.I took a tooth pick and it fells like sand paper in the groves.I looked over my other guns and there is no such thing in them,Is this normal for Kahr?I do have to say I really like this gun Its going to be my edc piece.Any suggestions would be great.Thanks

[Bawanna]

What ammo were you shooting, was it lead?

It doesn't sound like the chrome lining is peeling, but it might be if it's rough.

Look with some good light, see what a pick does when you run across it.

[scosgt]

I think the barrel is stainless, not chrome lined.

Use a brush and copper solvent to clean it and see what you get.

[Bawanna]

I believe its nickel plated. Its been a long time but there use to be frequent issues with it not adhering properly and chipping or peeling. I may be off on the terminology but it is plated.

[CJB]

Yes, the barrel is nickel plated. Kahr uses something in their guns during manufacturing/testing - and I would have sworn it was lead ammo, but they say otherwise. The new Kahr, and the used PM9 I got both had a streaky stuff in the barrel. It did appear like... a rough surface. Much scrubbing, shooting, scrubbing... and after a few hundred rounds and a few hundred passes of Mr. Wirebrush, they're clean and shiny.

On reflection... what we see in the bores may be a result of the nickel plating.

[jocko]

I think the barrel is stainless, not chrome lined.

Use a brush and copper solvent to clean it and see what you get.

wrong

[jocko]

Hi everyone,new to the site and Kahr.So last weekend I went and bought a cm 9,got it home cleaned it and headed to the range with 100 rds,not a bad day a few ftf,1 fte and 2 slide didn't lock back.I was not to concerned because I know there is a break in,got home ran a few patches through the bore then called it good.a few days later went back out with 150 rds the gun was really starting to smooth out worked great.Got home and decided to really give her a good cleaning,after i got done with the barrel I looked in the bore and in 3 of the six groves I see these little bumps starting around a 1/2 inch from muzzle almost down to the chamber.I took a tooth pick and it fells like sand paper in the groves.I looked over my other guns and there is no such thing in them,Is this normal for Kahr?I do have to say I really like this gun Its going to be my edc piece.Any suggestions would be great.Thanks

more and what CJB stated is probably right. Just shoot it like u stole it and clean real good with a good bore brush for awhile and it will clean itself up. I doubt if itis flaking and IMO it is some kind of buildup.:Amflag2:

[upnorth]

Took it out today again with 100 rds,got home and cleaned the heck out of it,still the same. I have 350+ rds through it now and mechanically it working great,I did notice I'm shooting about 4 in. low now.I think its time to call Kahr on Monday.

[jocko]

ASK IF U CAN JUST SEND THE BARREL AND SAVE ALOT OF TIME AND EXPENSE... Not sure ur gonna like kahrs answer, hope it works out for u.

[upnorth]

Just a update,called Kahr yesterday and talked to Jeff,had the day off (gotta love snow days) told him the problem he said no problem send the barrel in,so today I was off the the post office shipped priority with 150 insurance said it will be there Thursday.how long can I expect kahr to have it?I'll post the verdict when I get it back.Thanks

[Bawanna]

No one here works for Kahr so hard to say. I suspect it won't be long as it's just a matter of them looking at it and determining if it's bad.

If they don't have any of that barrel laying around it could be a whole new very ugly story and a long wait.

I'll go with option one and hope you get it back real quick.

[Buckshotshorty]

I'm a new owner of a CM9. My first scrubbing I noticed what looked like tiny pit marks or rust spots alongside the lands. I kept scrubbing but they would not come out.

Maybe I need to call Kahr also.

[jocko]

have u shot the gun to see how it shoots. U saying "what looked like tiny pit marks or rust spots. might indeed just need the right bore cleaner and brush to clean up those areas. Ur barrel is chrome lined, so I doubt if it is rust spots, and more than likely kahr is gonna tellu it is OK. Ur gona have to send the barrel in to them for them to tell u much of any thing, and\ I guess if that is what u want to do and be without it for a time, then pursue it.

[CJB]

Back when I got my first Kahr, a PM45 in April of '10, I joined up here and swore upon my honor that I knew what lead in a barrel looked like, and it was lead in the barrel, and... by extension... Kahr was using lead ammo to test fire at the factory.

There was lively discussion, in the forum, regarding the same.

Kahr on more than one occasion has stated - no lead - jacketed is used at the factory.

I've gotta take the folks at their word, but what did I have, and on the PM9, what was that - the same dark rough crud, and come to think of it, both PM45's had it, the new one worse than the used one.

I do know, that nickel goes on sorta lumpy, and that pains must be taken to make it, or get it, smooth. No matter the surface finish of the steel below, or the copper added (on electroplated nickel), its lumpy. My guess is what we're seeing is a bit of rough plating - which really doesn't need to be in the bore at all. Nickel plated bores are not the same as chrome plated bores... the nickel is for the outside (almost certainly) and the inside gets done just because its part of the barrel.

Then again - we have a barrel with polygonal rifling. Those are formed on mandrels, and the mandrels must be taken out - leaving the bore intact. It very well could be that there is some sort of magic industrial lubricant that is used, that is just gone to crud inside the bore - leftover from manufacturing. I don't know.. pure speculation.

It does come out, the bores do brighten, and nothing seems worse for the wear, even when the textured innards are still present.

Shoot it!

[Buckshotshorty]

have u shot the gun to see how it shoots. U saying "what looked like tiny pit marks or rust spots. might indeed just need the right bore cleaner and brush to clean up those areas. Ur barrel is chrome lined, so I doubt if it is rust spots, and more than likely kahr is gonna tellu it is OK. Ur gona have to send the barrel in to them for them to tell u much of any thing, and\ I guess if that is what u want to do and be without it for a time, then pursue it.

I did have one range session and shot 150 rounds. The shot flawlessly and scored about a 2.5 inch hole @ 33 ft. I'm not looking to fix something that's not broken I just never had a gun with those kind of very minor defects.

[jocko]

The HOPE DIAMOND actualy has defects..

[upnorth]

Just a quick update it's been about 3.5 weeks and still nothing,so yesterday I called Kahr and the guy I talked to took my name and number said he would check with shipping and call me back,well he never called back.Its a little disappointing I didn't think it would be a big deal for them to look at it and see if anything was wrong with it,I thought they would just replace it or send me mine back if nothings wrong.So the wait continues,maybe next week.

[jocko]

patience is gold myt friend. it will work out OK. Evidentewly it is not in shipping yet.

[upnorth]

I do have to admit Jocko, sometimes I don't have a lot of patience(just ask my wife):)

[jocko]

I feel ur pain, at my age I ain't got time to wait alot either..

[upnorth]

Fed x finally came today,I was kind of excited to open up package to see what kahr had to say,to my disappointment the only thing in the package was the barrel,no work order no explanation on what they came up with except my old barrel.when I got the gun the first 300 rds I never really paid attention to accuracy I was more just breaking it in,and it functions great,so tonight My son and I went out with around 50 rds, not good shooting all over within a paper plate some not even hitting it I was only 8 yard away.My other son came over later to check out his new piece and he had no markings like mine and this was a high point(not impressed with it)real pain to take down.Anyhow that's my answer from Kahr.:(

[CJB]

I think you'll find that the Kahr trigger takes some getting used to. It took me about three range session to get dialed in. Dry firing helps. Also, you need to NOT shoot it like its a terrible single action trigger, waiting for the break. Shoot it like the double action trigger that it is.

[upnorth]

I do remember before I sent my barrel in I was shooting low but groupings where more consistent,now there inst much consistency there all over.The only thing I changed is the sight picture, Front sight on top of back insead of a i.I'll be going out this weekend so I see what happens.

[CJB]

It takes some familiarity training... its not easy if you're used to SA shooting. First time out for me, I didn't even hit paper. Considering I shoot about 260-275 in bullseye, yikes I was really disappointed. Perseverance is the key. Try "calling the shot" while dry firing. That helped me a lot. As it sits now - I can do the PM45 or PM9, easily in the center, on a half size "figure" (aka the bad guy) target at 7 yards, but that took some practice.

Hang in there!~

[yqtszhj]

I do remember before I sent my barrel in I was shooting low but groupings where more consistent,now there inst much consistency there all over.The only thing I changed is the sight picture, Front sight on top of back insead of a i.I'll be going out this weekend so I see what happens.

I think that you have it. The Kahr has a different sight picture than some of my other guns. If your groups are somewhat consistent at 8 yards and it functions well I would say there is not a gun trouble.

Just so you don't feel bad about it, I have a Beretta 92FS stainless that I spent a pretty penny on and I cant shoot it worth crap in SA or DA. I swore that there was a problem with the sights. Then my oldest son shot 3 rounds and every shot was within a 1 inch group dead on target at 10 yards. Problem solved. It's me. :(

[muggsy]

The problem isn't in the gun the problem is with the shooter. When you learn to master the trigger the gun will shoot to point of aim. The CM9 is among the easiest to disassemble. You align two marks, remove the slide stop and pull the trigger. What could be easier? It's a poor carpenter who blames his tools. Swallow your pride and learn to shoot the gun. It's one of the finest made.

[JimC]

[QUOTE=Bawanna;231120]No one here works for Kahr so hard to say. [QUOTE]

I'm not too sure about that. ;)

I've always gotten the feeling that someone here is a Kahr employee.

It has happened on other well know gun forums in the past.

[muggsy]

[QUOTE=Bawanna;231120]No one here works for Kahr so hard to say. [QUOTE]

I'm not too sure about that. ;)

I've always gotten the feeling that someone here is a Kahr employee.

It has happened on other well know gun forums in the past.

Don't keep us in suspense, JimC. Who do you think is a Kahr employee?

[JimC]

[QUOTE=JimC;237295][QUOTE=Bawanna;231120]No one here works for Kahr so hard to say.

Don't keep us in suspense, JimC. Who do you think is a Kahr employee?

You figure it out. You read and post here more than I do.

[Bawanna]

No active member here is an employee that I'm aware of. It could be so but what would it really matter? Seems like it would just be better first hand info and perhaps a good pipeline back to the factory to address issues. Crap you think Jocko's a spy and really works for Kahr. I never thought of that one.......

I'll happily go to work for them as a custodian if they move the plant to someplace pleasant where I can dress up like a man with any man tools I want rather than being approved by some state person.

Seems like I'd have figured it out by now, I got over a 100 post.

[deadeye]

My CM9 was flawless out of the box. (Followed the stickies). At 8 yds I couldn't even hit the target. Mostly low and left. I was going to have the sights re-aligned or new sights until I read a lot of posts from the experience guys. Did a lot of practicing and after 400 or so rounds can now put them in a 4" circle in the center of the target. Wasn't the gun, it was me. There are many things I'd be willing to part with, but my Harley and CM9 are keepers.

[jocko]

two very very wise choices. Whats a Harley???

[Salty]

What brand / type of ammo are you shooting ?

[deadeye]

I shot Federal 115 grain FMJ at the time. Anything I can get now.
Jocko. A Harley is what Peter Fonda traded for his Vespa after Easy Rider.