can a k-31 be rechambered?


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redranger1
February 12, 2006, 05:05 PM
my brother and i was talkin today and got to wonderin if a k-31 swiss could be rechambered to a 308 or 30-06. im thinkin that the action isnt long enough fer an 06 though. thanks fer the input.

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Cosmoline
February 12, 2006, 05:18 PM
I believe you'll find the head diameter of the 7.5x55 chamber is wider than the Mauser standard, which means any attempt to rechamber it to .308, .30'06 or most others will require the barrel to be removed, set back and rethreaded before the new reamer is used. It's a waste of time. Just use 7.5x55

Car Knocker
February 12, 2006, 05:23 PM
Looks like the .30-06 case is about 0.2" longer but you would also have to alter the bolt face since the .30-06 is about .025" smaller in diameter. Like any other project, it could be accomplished if you throw enough money at it.

Navy joe
February 12, 2006, 05:26 PM
I'm sure anything can be achieved, but will it be worth it? As you noted, .30-06 is too long for action and magazine. .308 is shorter than 7.5 and of a smaller base diameter, so I imagine you could make it .308 with a rebarrel or some ridiculous chamber insert. That said, GP-11 is cheap for the quality of ammo you get. I save all of it until I get enought to buy a batch of Berdan primers. Further, I bought a big batch of Graf's brass, some .308 bullets, Lee dies and a hand press I already had, now I can have ammo cheaper than factory .308 any time I want it. Love my Swiss guns.

Sleeping Dog
February 12, 2006, 06:29 PM
I save all of it until I get enought to buy a batch of Berdan primers.
It's probably cheaper and easier to buy some brass that'll take Boxer primers. Either 7.5x55 or some Winchester .284 that you can resize.

Regards.

Mannlicher
February 12, 2006, 06:32 PM
Anything can be done if you want to spend enough money on it. In this case, I think it would be a waste of money though.

Trebor
February 12, 2006, 06:39 PM
I ran across a reference on a gun board somewhere to someone who had a smith rebarrel to .308. IIRC, they cut down the original barrel and used it as a barrel stub to mate the new barrel somehow. I don't know the details of how that would work.

jerkface11
February 12, 2006, 06:55 PM
They used to rechamber them in .30-30. I think .308 or .30-06 would be kinda silly though. Since 7.5x55 has nearly the same balistics.

kjeff50cal
February 12, 2006, 07:25 PM
IIRC there are some K-31s already chambered for 7.62 X 51 NATO that were used in international competition. Unfortunately these target models (how much more accurate can they get?) cost a princely tarriff.

kjeff50cal

pbhome71
February 12, 2006, 09:14 PM
There is a gunsmith in PA that specialize in K-31. He can re-barrel, and re-stock it.

I can't find his name now, but I believe that you can google for it.

-Pat

MagnumCaliber357
February 12, 2006, 09:15 PM
more money then its worth in my opnion

cracked butt
February 13, 2006, 02:16 AM
Complete waste of money.
The S-R rifle can't handle high pressure rounds like the .308, but you get nearly the same performance as the .308 at lower pressures with the 7.5x55 swiss as it is.

Cosmoline
February 13, 2006, 03:11 AM
Complete waste of money.
The S-R rifle can't handle high pressure rounds like the .308, but you get nearly the same performance as the .308 at lower pressures with the 7.5x55 swiss as it is.

I agree with your conclusion, but it should be noted that the K-31 is not a Schmidt-Rubin action and is exceedingly strong. The S-R actions had locking lugs about half way down the bolt and a partially unsupported case head. The K-31 action has normal lugs and a fully supported head.

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