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Shooting & Reloading - Mausers, Big Bores and others >> Rifles
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vegard_dino
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Reged: 05/03/09
Posts: 262
Loc: From Norway, but living in Swi...
8*72R...some information
      #132397 - 15/04/09 08:57 PM



Hello all

I am looking at a German made drilling with 2 rifle barrels in 8*72R.

But, I can not find any information on that caliber.
Is it based on a necked down 9.3*72R?

What was it used to hunt? Anyone who have one like that or have had it? Used it today for hunting?

All help is good
Thanks for looking

--------------------
Cheers all, Vegard_dino

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JabaliHunter
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Reged: 16/05/07
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Re: 8*72R...some information [Re: vegard_dino]
      #132400 - 15/04/09 09:35 PM

According to CotW - developed by Sauer from the 9.3x72R. Uses .323 bullets with RWS loads listed as 150gr @ 2334fps; 170gr @ 2240fps; and 225gr @ 1900fps.

Sellier & Bellot have a current factory load with a 193 grain bullet.

Probably a useful moderate range deer rifle....

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vegard_dino
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Reged: 05/03/09
Posts: 262
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Re: 8*72R...some information [Re: JabaliHunter]
      #132403 - 15/04/09 09:42 PM



Hi

I understand. A necked down 9.3 then.

Oh, ,factory ammo to, good. Well, with the load you talk about, a close range small deer, boar or also small African animal rifle.

But, not a bad caliber.

Thanks for helping me

--------------------
Cheers all, Vegard_dino

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fuhrmann
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Re: 8*72R...some information [Re: JabaliHunter]
      #133074 - 22/04/09 08:31 AM

Quote:

According to CotW - developed by Sauer from the 9.3x72R. Uses .323 bullets with RWS loads listed as 150gr @ 2334fps; 170gr @ 2240fps; and 225gr @ 1900fps.

Sellier & Bellot have a current factory load with a 193 grain bullet.

Probably a useful moderate range deer rifle....



Lots of nonsense in COTW then!
This cartridge was definitely only made with .318 bullets!
Other sources say it was developed by Wilhelm Brenneke.
The "current S&B load" will probably be 9.3x72R.

Fuhrmann

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vegard_dino
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Reged: 05/03/09
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Re: 8*72R...some information [Re: fuhrmann]
      #133075 - 22/04/09 08:35 AM


Hi fuhrman

Thank you for the reply.

I just got some information about the German gun, drilling maker, Collath. And they made a 8*72R Teschner-Collath. Can that be the original one?

--------------------
Cheers all, Vegard_dino

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JabaliHunter
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Reged: 16/05/07
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Re: 8*72R...some information [Re: fuhrmann]
      #133131 - 22/04/09 06:06 PM

I looked up S&B and it appears that they only have 9.3x72R. My apologies....
However, I found this - 8x72R Sauer Loaded Ammuni tion .323" 150 Grn Sptz web page
I guess it is like most other German 8mm rounds - .318 and .323 bores available?

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fuhrmann
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Reged: 04/01/05
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Re: 8*72R...some information [Re: vegard_dino]
      #133132 - 22/04/09 06:10 PM

I cannot tell about Teschner and Collath. I think they were very inventive and used to do things their own way. So it is possible that their 8x72R was a bit different.
Hunting cartridges were standardized around or before World War I, so dating the rifle may also give clues.
In the end it will not matter: there is no modern factory ammo available, you have to reload.

The Dynamit Nobel handloading book says:
"probably several designers have worked on development of the 8x72R, which appeared the first time in 1898. But without doubt the cartridge can be attributed to Wilhelm Brenneke. The reference to Sauer & Sohn, which is found in literature, is probably not correct: there was a cartridge 8x72R S&S, but this is a necked down 9.3x72R S&S and not identical to the conical 8x72R case. The 9.3x72R S&S has a slight bottleneck and is not identical with the conical 9.3x72R which was the starting case for the 8x72R".

Reloading data in the book give a muzzle velocity of max. 680 m/s with a 12.7 gram jacketed round-nose bullet from RWS (definitely .318). Max. pressure 2500 bar.

Fuhrmann

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vegard_dino
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Reged: 05/03/09
Posts: 262
Loc: From Norway, but living in Swi...
Re: 8*72R...some information [Re: fuhrmann]
      #133133 - 22/04/09 06:19 PM



Hi and thank you for a good reply.

Yes, the Collath did make in a style for them self, good or bad.

I now learned that they had two 8*72R calibers, the other was with narrowed powder space. They also had a 9.3*72R with the same narrowed powder space. And some more interesting calibers....

But, back to the 8*72R.

I am do my own loading yes, but brass may not be so easy to find, in a caliber like these. First have to find out if it is a Collath caliber or a Brenneke or even a Sauer caliber.

I will try and find out when the gun, drilling, is made and come back with some more information.

--------------------
Cheers all, Vegard_dino

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