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Shooting & Reloading - Mausers, Big Bores and others >> Mauser Discussion Forum

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dosenroller
.224 member

Reged: 15/01/17
Posts: 4
Loc: PA

Mauser take down rifles barrel threading
#294802 - 05/02/17 09:00 PM

Hello,

I always admiring Mauser take down rifles. Most often the barrel is simply threaded into the receiver and after operating a latch you can unthread the barrel. A lot of of those seem to utilize the standard Mauser barrel threading. I talked to a gunmaker years ago and he claimed that having the original threads has the disadvantage that the first shot after reassemble of the rifle will be off a few inches due to the fact that the barrel has to seat itself into the threading. He recommended a tapered fitting between the barrel and the receiver to eliminate that problem. I also seen pictures of Hartmann and Weiss take down rifles and they have a threaded connection. It seems though that the thread they using is different, more square than triangular.

Does anybody has experience with this and can give me more information?

Thank you very much

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Waidmannsheil
.400 member

Reged: 19/04/13
Posts: 2446
Loc: Melbourne Australia

Re: Mauser take down rifles barrel threading [Re: dosenroller]
#294826 - 06/02/17 06:04 AM

The tapered fitting your gunsmith is talking about is the same system that is employed by the Cam-Lock system used to mount lathe chucks onto the lathe spindle. It works very well but requires super precise fitting. The threads often used are either ACME (29 degrees included angle) or Trapezoidal (30 degrees included angle). These types of threads have greater root thickness and the steeper thread angle provides less splaying of the thread under load. They are often chosen where a segmented thread is used. The German gunmaker Theo Jung uses this system.

http://www.waffenjung.de/?take-down,60

Waidmannsheil.

--------------------
There is nothing wrong with vegetarian food, so long as there is meat with it.

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justcurious
.333 member

Reged: 17/03/10
Posts: 285
Loc: Germany

Re: Mauser take down rifles barrel threading [Re: Waidmannsheil]
#294856 - 06/02/17 09:44 PM

https://en.wikipedia.org/wiki/Trapezoidal_thread_forms
IIRC that is the type of threading used by H&W.

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dosenroller
.224 member

Reged: 15/01/17
Posts: 4
Loc: PA

Re: Mauser take down rifles barrel threading [Re: justcurious]
#294857 - 06/02/17 09:48 PM

Thank you for the replies, this is exactly what I was looking for. Jung makes outstanding rifles, I like his work. Interestingly he was using the "slip fit" method for the longest time and now he machines in the split thread.

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Waidmannsheil
.400 member

Reged: 19/04/13
Posts: 2446
Loc: Melbourne Australia

Re: Mauser take down rifles barrel threading [Re: dosenroller]
#294937 - 08/02/17 09:22 PM

Quite agree, I also really like their rifles and they certainly do some very good machining.

Waidmannsheil.

--------------------
There is nothing wrong with vegetarian food, so long as there is meat with it.

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