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Author Topic: barrel repair  (Read 1606 times)

JohnN

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barrel repair
« on: May 28, 2020, 06:11:26 PM »
I built a Kennedy Firearms pistol about 20 years ago. I took it apart to refinish and one of the lugs came off. I saw this hole in the barrel. It doesn't go through but if possible would like to repair it. Can I weld on this  ? If not I can get a similar barrel but as you can see the breech plug is "cupped" and the touch hole goes through the plug. Anybody make this type anymore ? Thanks in advance.



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Offline bob in the woods

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Re: barrel repair
« Reply #1 on: May 28, 2020, 07:31:51 PM »
That looks like the 1st attempt at drilling for the barrel pin was a big "miss"  !    I'm not up on what type of welding would be best, but I'm sure it can be repaired.  If you want a new barrel, I believe Charles Burton could help you out.
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Offline davec2

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Re: barrel repair
« Reply #2 on: May 28, 2020, 07:39:43 PM »
If the barrel is made of 12L14 alloy, it is not weldable.  But you could braze / hard silver solder fill the flaw and make a repair that way.  I take it you have fired the pistol before and, with typical pistol loads, a braze repair would make it better than it was.
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Offline jerrywh

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Re: barrel repair
« Reply #3 on: May 28, 2020, 08:38:38 PM »
That is a bad spot to weld no matter what kind of steel it is.  You can put in an iron inlay and peen it in real well .  If done right it will not show and it will be stronger than now. Just undercut the groove a little with a small chisel and swage in a piece of iron wire.
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JohnN

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Re: barrel repair
« Reply #4 on: May 28, 2020, 08:53:12 PM »
Well I used my flux welder and it filled the hole pretty well. Ground and filed it down and put on a new lug. Don’t think I’ve ever shot this gun before. May have too proof it before holding it and shooting it.
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Offline Goo

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Re: barrel repair
« Reply #5 on: May 29, 2020, 05:02:48 AM »
If you weld it most likely cause a warp in the barrel at least that's what happened to the first barrel I ever made when I didn't know better and welded a lug onto it.
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Offline 44-henry

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Re: barrel repair
« Reply #6 on: May 29, 2020, 06:09:38 AM »
You received good advice earlier about not welding the barrel. I hope it is not 12L14 as Jerry is very correct about the problems with that alloy. Lead is great for machining purposes, not so much for welding though. I have seen some beautiful welds done on 12L14, problem is nobody recommends welding it for anything structural.
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Offline flintlock hunter

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Re: barrel repair
« Reply #7 on: May 29, 2020, 08:27:48 PM »
I had a similar problem with a pistol barrel of unknown steel. Its was a very badly placed vent. I inserted a copper pipe in the barrel as a backer and tig welded the hole shut. A quick blast of heat and wire then let cool completely, repeat till filled. I dressed it down and redrilled  with no problems.
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