Kahr barrel "liner" ?

[CJB]

I spotted a line on another forum, whereby some forum user was bashing Kahr, talking about low slide velocity in cold weather and that his K40's "barrel liner unscrewed" when shooting 180g bullets.

Folks, I think I got the Kahr manufacturing process just about down pat. I have looked at and prodded and inspected under 7x and 10x magnification. I've had my own three apart many times just to marvel at the way things are fit and made.

I know that a good deal of 1911 barrels are lined (well technically the hood section is silver brazed on), I know SIG did the same with at least some German made barrels (since I own one!). Liners... never seen.

Ok, somebody lube up my brain a little and tell me what I've got wrong. Start with a three inch diameter blank. Beat the living snot out of it on a mandrel with precision hammers. You end up with a longer, less fat blank that looks like a candy cane. Cut to length, cut the chamber, machine the hood and locking area, heat treat, nickel plate, stick it in the bin ready for assembly. Someplace in that mix, you stamp some numbers on it for caliber.

Where's the liner thing?

[b4uqzme]

My Kahrs have barrel liner-uppers. They are called sights. Maybe that's what he meant. :rolleyes:

[Bang_button]

My Kahrs have barrel liner-uppers. They are called sights. Maybe that's what he meant. :rolleyes:


Yeppers, got that right! Line-er-uppers... mah big sights do that right fine!

[CJB]

Yah but just like a chunky red haired co-ed at a liberal arts junior college, your liner-uppers don't unscrew, they either slide into place or are pinned from underneith.

[b4uqzme]

Dang. Maybe then he meant the guide rod. If he was confused and really has an MK40 ...that would unscrew....and it would be a barrel (a)liner...???

[CJB]

Well lo and behold, there were pictures posted of the center of the chamber coming out.

http://img.photobucket.com/albums/v214/bandersnatchreverb/Kahr_Issue1_copy_zps91683d30.jpg (http://smg.photobucket.com/user/bandersnatchreverb/media/Kahr_Issue1_copy_zps91683d30.jpg.html)

He claimed the "liner" unscrewed. Not sure. Not sure if Kahr would screw barrels into the locking area if they were made with shanks that fit into the same (as I previously described). Could be... I just have no clue.

Either way, it seems like the chamber part of the shank broke off and came loose.

Some old timer with Kahr might want to elaborate on this. Claim was a 2001 K40 model.

I'm all ears!

[Bawanna]

I think he was overbuffering. Just sayin.

[warbird1]

Photoshop maybe? Beats me.......

[RRP]

Perhaps Kahr made a universal barrel, using an insert for the specific caliber?


or


Maybe Kahr produced a run of barrels that were out-of-spec. Rather than scrap the lot, they bored-them-out and pressed-in a sleeve?

Just a wild guess.

[ripley16]

I wonder what the muzzle end looks like then?

[CJB]

Bet the muzzle looks ok and theres a gap in front of the chamber.

[hardluk1]

The barrel "liner" you refer to is a nickel plating , well the hole barrel is nickel plated inside and out.

[muggsy]

I think he was overbuffering. Just sayin.

I love it when you use those technical terms, Bawanna. I like to see that barrel out of the gun before commenting. I'd also like to know if he was the original owner of the gun. I've never seen anything vaguely resembling that in a Kahr Barrel. Could it have been a repair gone bad?

[berettabone]

If you look at the 2 pictures closely, it looks to me, that right above the barrel, on the bottom of the frame........looks like the damage is worse on the second picture. Also, the 2 feed ramps look different. Whether it matters or not. Just an observation.

[leftysixty]

How about it's a steel casing (Tulammo?) that has had the rim/primer pocket removed.

I looks like the center has been drilled with a over sized bit. The out side looks to have been cut also.

I call TROLL BS:eek:

Just my 2 bits worth:D

[feedramp]

Very strange photo indeed.

I've never seen that before, and will not let it disturb my Kahr feelings ... :ohmy:

[muggsy]

Kahr barrels are supposed to be machined from a single piece of bar stock. I've heard of two piece 1911 barrels, but those are supposed to be press fit and silver soldered.

[muggsy]

I spotted a line on another forum, whereby some forum user was bashing Kahr, talking about low slide velocity in cold weather and that his K40's "barrel liner unscrewed" when shooting 180g bullets.

Folks, I think I got the Kahr manufacturing process just about down pat. I have looked at and prodded and inspected under 7x and 10x magnification. I've had my own three apart many times just to marvel at the way things are fit and made.

I know that a good deal of 1911 barrels are lined (well technically the hood section is silver brazed on), I know SIG did the same with at least some German made barrels (since I own one!). Liners... never seen.

Ok, somebody lube up my brain a little and tell me what I've got wrong. Start with a three inch diameter blank. Beat the living snot out of it on a mandrel with precision hammers. You end up with a longer, less fat blank that looks like a candy cane. Cut to length, cut the chamber, machine the hood and locking area, heat treat, nickel plate, stick it in the bin ready for assembly. Someplace in that mix, you stamp some numbers on it for caliber.

Where's the liner thing?

I could be wrong, but I don't believe that Kahr barrels are hammer forged around a mandrel, but the rest of what you said sounds correct. I believe that the barrels are drilled and button rifled.

[ripley16]

I agree, looks like a case without the rim inserted into the chamber.

[CJB]

Mugs, to the best of my (limited) knowledge, there is no other way but to hammer forge rifling, except around a mandrel. You start with a short fat blank, drill it to accept the mandrel - and I suppose its reamed too for initial production type precision at that point. The hammers themselves are both automated and VERY precise. They're also very strong and very fast. The hammers, from what I've been made to believe, are not hammers in the true sense, but hydraulic pistons that act as if they're are hammers, whacking the hot blank into submission by beating the ever lovin' snot out it.

The final precision comes from the mandrel itself. Chambers can be hammer forged into the barrel, as part of the mandrel.

I've got a Ruger .22 hammer forged barrel that Ruger sold to Clark Custom. Clark cut them at the crown, and put the chamber in, and cut the retainer wedge slot. The outside looks like a metal candy cane and is the uncut, unaltered finish that the hammers left there. Its a cool looking barrel. The oustide looks very carefully made, its that nice.

And that tells me about the process, and also strongly suggests that all hammer forged barrels are also turned after forming, for final profile.

The OP on the M4Carbine forum said that Kahr denied it being a 2 piece barrel, but "ate crow" after checking their records. He also said they refused to deal with a PM9 that had issues. I think the poster has shown his stripes...and they aint pretty.

[jocko]

we gotta remember to that kahr has two barrels. One standard rifleing and one polygonal rifling. Lothar only makes the polygonal rifled barrels and would thinnk one could google up exactly how Lothar does their barrels. I have no clue who makes the standard rifled barrels. I do know the lothar barrels come in 3ft blacnsk rifled and that is all and kahr does the cutrting and machings after that. Hammer or button WHAT DIFFERENCE DOES IT MAKE.

Damn I am gettig atached to Hillary's answer, it just seems to fit. Did u guys know tha tshe stands to pee. Yup muggs sent me a photo of her in the mens restroom. Muggs would never send me nuttin that wa snot true, or was it maybe Downtown who sent it, either way, both losers IMO.

OLothar=Walther barrels are button rifled. here is a nice video that the CEO of Wahter explains.



www.youtube.com/watch?v=HrmWN0igJY0

[muggsy]

There is no way in hell that a man of your caliber doesn't know what getting hammered is Jocko, but your answer was right on the button.