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yamoon
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Off center chamber
Oct 28th, 2024 at 11:07pm
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I have a German schuetzen rifle that sometime in the past was rechambered for 32 Win Spcl. The problem the idiot apparently didn’t use a bore guide and the chamber is off center by several thousands. Setting the barrel back a few threads is not an option. Could the chamber be drilled out and a piece of barrel steel sweated in and be rechambered? Or are there other fixes.
Mike
  
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westerner
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Re: Off center chamber
Reply #1 - Oct 28th, 2024 at 11:29pm
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I've had a couple problem chambers like that. Both hiwall 32-40s. Actually three. Another was a German feurstutzen I got from bpjack.
First fix was to rechamber to a .32 straight taper case using the Krag case. Worked great for breech seating and smokeless but terrible for BP. Few years ago I rechambered both to the regular Krag chamber with the shoulder. Working good with both powders now but is an odd chambering all being 32 Krags. 
Since then Butch decided we don't have to use BP at Butte matches.  Grin Cry

I have read about chambers having a steel insert installed and rechambered.  In my rifles the off center chambers effected the throat. so not sure how one would contend with that.
  

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marlinguy
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Re: Off center chamber
Reply #2 - yesterday at 10:26am
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Had a well known gunsmith reline my Hepburn and got the thing .011" off center. I fired it 6 shots when it bulged the chamber, so something was wrong there also. Tried several times to get him to fix it, but always got some excuse why he couldn't do it. I finally took it to a local gunsmith to have the chamber sleeved and rechambered. He's the one who discovered it was .011" off center and told me if he fixed it the gun would still never be right or shoot well.
We finally removed the barrel and bought a new Green Mountain barrel in .40 caliber and replaced the screwed up barrel.
  

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John Taylor
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Re: Off center chamber
Reply #3 - yesterday at 11:09am
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I sleeve chamber often. I thread the insert and install with Loctite so it can't move. I have soldered them in in the past but found that is not the best way.
  

John Taylor   Machinist/gunsmith
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chipmaker
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Re: Off center chamber
Reply #4 - yesterday at 12:36pm
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Boring an off center chamber and installing a threaded sleeve, as described above, is an effective way to correct a damaged chamber and It seems as if the 32 Sp was the go to chamber for damaged 8.15x46R chambers.
In a sleeved chamber, I'd like the new chamber to bridge the joint between the sleeve and original barrel. Since the rifle is a schuetzen rifle, I'd also like the new cartridge to have a chamber pressure no higher than the 8.15x46R but can't think of a suitable candidate.
I'd be interested in what Mr. Taylor feels about sleeving the schuetzen rifle chamber and restoring the shorter 8.15x46R chamber. Is it safe?
Otto

  
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yamoon
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Re: Off center chamber
Reply #5 - yesterday at 10:27pm
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I’ve always felt a 32 Krag would be a great cast bullet hunting cartridge. How did you chamber, 30-40krag with a 32 pilot, then a reamer to open up to 32 caliber? My problem is the chamber is tilted, if that is the right word. The only solution I see is drilling out and inserting a piece and re chambering.
Mike
  
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yamoon
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Re: Off center chamber
Reply #6 - yesterday at 10:43pm
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I shoot several old Schuetzen rifles, using mild IMR4227 loads, so pressure is not a problem. The existing 32 Winchester Special chamber is quite a bit longer than 8.15 x 46r, so I am thinking 32-40, the other problem is the bore slugs .316 so 32-40 would be a breach seating proposition. 8.15x46r with a long throat like those in the rifles chambered for the 16h bullet would be ideal.
Mike
  
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Re: Off center chamber
Reply #7 - Today at 1:54am
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yamoon wrote yesterday at 10:27pm:
I’ve always felt a 32 Krag would be a great cast bullet hunting cartridge. How did you chamber, 30-40krag with a 32 pilot, then a reamer to open up to 32 caliber? My problem is the chamber is tilted, if that is the right word. The only solution I see is drilling out and inserting a piece and re chambering.
Mike


The first re-chamber was with a strait tapered reamer with .32 pilot. Second rechamber was with a borrowed 30-40 Krag reamer. I wrapped the pilot with Scotch tape till it fit the lands. The reamer cut the shoulder and body out leaving the throat and neck untouched. Scotch tape was not effected in any way by the sulfur cutting oil or lands. 
  

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