All,

I'm looking at a Mauser that is said to be a 10.75, however, the only numerical marking on the barrel, other than the serial number is "10.5".

Shouldnt it clearly be marked 10.75?

Thanks

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Alf,
aint a 10.75 a 404 or a 10.75x68?

jeffe

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quote:

Originally posted by ALF:

Miller & Greiss then also produced the 10.5 x73 which was a German version of the 416 Rigby.

COW lists the 9,5x73 Miller & Greiss. Was the 10,5x73 just a necked up version, or a totally different cartridge? I have never heard of this version. Very interesting.

This 10.5 mauser is a mystery.

I just checked in Ken Howell's "Designing and Forming Custom Cartridges", which is an exhaustive (and expensive!) 600-page book on all the various inch and metric cartridges from the beginning of the self-contained cartridge.

It progresses by caliber, and in the present area of interest, the listings in order are

-Super 10mm Magnum

-10.3 x 65 Rimmed

-10.4mm Italian Ordnance revolver

-10.4 x 48 Rimmed Vetterli

and then the listing jumps right up to the 10.75 x 68 Mauser

In a book which lists THREE HUNDRED wildcat and factory metric rounds, there are precisely zero with a bore diameter of 10.5 mm....

I can only conclude that the marking must be in error, or not even a caliber stamping, and a chamber cast may be the only reliable way to determine what cartridge the rifle is supposed to use.

The .404 Jeffery is a 10.75 x 73, by the way.

No, ALF know what he is talking about. COW lists the 10,5x47R he mentions. As does ALSO John J Donnely's "The handloader's manual of Cartridge Conversiones".
But, that is the only european, metric 10,5 I can find. Eager to hear what ALF can tell us!

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The bottom Type B Sporter, built in 1914, is marked 10.5 on the barrel. I haven't slugged the barrel or fired it but a 10.75x68 cartridge fits the chamber:

quote:

Originally posted by ALF:
Ok, here goes !


10.5 X 68

DWM case # 515A This is also the "alias" of the 10.75 x 68 Mauser.

The 10.75 x 68 was listed by DWM in 1911 as 10.5x68 Mauser also referred to as a 10 x 68

10.5 X 73 MILLER & GREISS
1928-1940
Loaded by RWS

Sorry ALF, but you have me confused. Did they really use .416 bullets, named 10,5 paralell to the .423/10,75, or did they use both 10,75 and 10,5 figures for the same .423 bullet?

Thanks,

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Thanks again, ALF, much appreciated! Both Donnely's and COW list the 10,5x47R with a .419 bullet.
Hmpr, talking about confusing deliberatly!

Kynoch,

Slug the bore and do a chamber cast. Who knows what you'll find.

Is it a nice classic Mauser or something else?

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Thanks all. I appreciate the help. I found out that it also came with dies on a follow-up phone call. The dies are for 10.75x68! It's an original mauser in very good/excellent, untouched condition, figured wood, metal grip cap. Oddly (to me anyway), it was never fitted with a rear sight, but a peep sight is installed and the front sling attachement is not on the barrel but on the stock. Are these features unsual? I'm a Mannlicher Sch. man myself, so this will be my first mauser. Any thoughts on which model it may be (A or B)?

Mine has a 10,5 on the barrel and it's a 10,75x68....

I was told (maybe not truth)that 10,5 was till the "grove" or whatever is called in english !! And the other 0,7 mm was the "whole" diameter

L

Kynoch,

Where was this rifle proved?

The German proof laws required a lot of information to be stamped on the rifle. Perhaps this rifle was built elsewhere, and the marking was not as rigorous.

My first impression was what Lorenzo notes, groove versus land diameter.

But maybe it was just the marketeers at play again.

jim

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10.5 mm lands, 10.75 mm grooves, ja. Cartridge naming rules are a bit willy nilly , but that is O.K. 10.5x68mm is same as 10.75x68mm ... sometimes ...

10.5x73mm being a .416 Rigby is news to me, but makes sense, though 74 mm would make more sense, as it is a little longer than the 10.75x73mm .404 Jeffery.

Good to know.

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Alf,
Agreed. The Rigby case length of 2.900" = 73.66 mm. Nominal 74 mm would have been closer to reality. That's all.

The .404 Jeffery at 2.875" case length =73.03 mm which is very close to nominal.

In the screwy world of cartridge nomenclature, the metric .416 Rigby is 10.5x73mm. And the 10.75x68mm is also called 10.5x68mm.
Thanks for this bit of education.

BTW, the proposed .500 Mbogo 3 Inch Express is also known as the 12.95x77mm: .500M3IE