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

kuduae
.400 member


Reged: 13/01/10
Posts: 1756
Loc: middle of Germany
Re: Caliber question on Mauser
      27/04/18 03:34 AM

Longhunter, the rifle you describe was proofed 839 = August 1939 by the Zella-Mehlis proofhouse , ledger entry 245 of that month. It was made for Otto Bock, Kronenstrasse 7, Berlin, founded 1883, existed until WW2. Otto Bock is best known as the inventor of the 9.3x62 in 1905, but sold many smaller bore rifles on Mauser and Haenel actions in .25 Rem and 5.6x52R aka .22 Savage HP too.
The diameter marked by the proofhouses up to March 1940, here 5.5 mm, is not part of the cartridge designation nor the groove or bullet diameter, but the narrower bore or land diameter, marked in .1 mm increments. 5.5 mm and the maximum case length 52 mm is correct for the 5.6x52R aka .22 HP, CIP min. bore 5.55 mm = .218", min. groove 5.75 mm = .226", max bullet 5.76 mm = .227".
There are usually some very slight differences between imperial (inch) SAAMI and metric CIP dimensions due to different measuring habits, especially in pre-WW2 and pre-SAAMI (1929) cartridge and chamber dimensions. So try again with a factory cartridge or a full length resized case.

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Subject Posted by Posted on
* Caliber question on Mauser NOW WITH PHOTOS TN_Longhunter 27/04/18 12:55 AM
. * * Re: Caliber question on Mauser Rothhammer1   27/04/18 06:36 PM
. * * Re: Caliber question on Mauser Rothhammer1   01/05/18 06:51 PM
. * * Re: Caliber question on Mauser Wanabebwana   11/05/18 06:21 AM
. * * Re: Caliber question on Mauser DarylS   27/04/18 01:38 AM
. * * Re: Caliber question on Mauser TN_Longhunter   27/04/18 02:22 AM
. * * Re: Caliber question on Mauser kuduae   27/04/18 03:34 AM
. * * Re: Caliber question on Mauser TN_Longhunter   27/04/18 06:08 AM
. * * Re: Caliber question on Mauser paradox_   27/04/18 09:33 AM
. * * Re: Caliber question on Mauser Huvius   27/04/18 10:16 AM
. * * Re: Caliber question on Mauser paradox_   27/04/18 01:06 PM
. * * Re: Caliber question on Mauser kuduae   27/04/18 05:40 PM
. * * Re: Caliber question on Mauser paradox_   27/04/18 09:15 AM

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