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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

eagle27
.400 member

Reged: 24/01/09
Posts: 1165
Loc: Rolleston, Christchurch, New Z...

Re: 10,75x68 Mauser
05/08/09 04:46 PM

Wolf's loads for his 10.75x68 seem reasonable with his 400gr SP at 2100fps which about duplicates the old .404 load. I find it very hard to believe that 2300fps with a 400gr would be attainable in this rather small case. It would certainly be pushing the pressure boundaries and I would not like to use such loadings in early firearms chambered in 10.75x68.

Another point that has not been mentioned, although is recognized in other posts on case life, is the issue of the very slight shoulder that the 68 case has. As in the other posts and in particularly in reference to the 375H&H, shallow case shoulders tend to allow brass flow leading to very short case life. I imagine with the scarcity and cost of cases lower pressure loads would be the order of the day in the 10.75x68.

On the earlier query in this post about the velocities Von Gruff achieved from some old Kynoch rounds in his .404, I checked back in some notes and I see I did pull a Kynoch .404 round some years ago to see what and how much powder was loaded. This was a round from original sealed packets of five of the nitrocellulose “increased velocity” load with an advertised velocity of 2225fps. The cartridges are Berdan primed with purple sealer around the primer pockets.
The powder charge weighed in at 75.0 grains and most likely Nobels No 1. These cartridges chronograph at just on 2200 fps in my .404.

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Subject	Posted by	Posted on
10,75x68 Mauser	grandveneur	11/04/09 02:31 AM
Re: 10,75x68 Mauser	450_366	12/04/09 11:26 PM
Re: 10,75x68 Mauser	grandveneur	13/04/09 12:07 AM
Re: 10,75x68 Mauser	peter	11/04/09 02:57 AM
Re: 10,75x68 Mauser	VonGruff	11/04/09 10:03 AM
Re: 10,75x68 Mauser	peter	12/04/09 05:12 AM
Re: 10,75x68 Mauser	VonGruff	12/04/09 05:56 PM
Re: 10,75x68 Mauser	peter	13/04/09 03:45 AM
Re: 10,75x68 Mauser	VonGruff	13/04/09 07:52 AM
Re: 10,75x68 Mauser	peter	14/04/09 01:46 AM
Re: 10,75x68 Mauser	VonGruff	14/04/09 07:09 AM
Re: 10,75x68 Mauser	eagle27	14/04/09 05:21 PM
Re: 10,75x68 Mauser	peter	15/04/09 03:54 AM
Re: 10,75x68 Mauser	ozhunter	14/04/09 08:16 PM
Re: 10,75x68 Mauser	Rolf	15/04/09 03:39 AM
Re: 10,75x68 Mauser	grandveneur	13/04/09 04:49 AM
Re: 10,75x68 Mauser	peter	13/04/09 04:52 AM
Re: 10,75x68 Mauser	grandveneur	02/08/09 08:19 PM
Re: 10,75x68 Mauser	simonsaorsa	05/08/09 01:49 AM
Re: 10,75x68 Mauser	eagle27	05/08/09 04:46 PM
Re: 10,75x68 Mauser	peter	02/08/09 09:53 PM
Re: 10,75x68 Mauser	grandveneur	03/08/09 12:52 AM
Re: 10,75x68 Mauser	NitroX	03/08/09 05:03 PM
Re: 10,75x68 Mauser	VonGruff	04/08/09 05:50 AM
Re: 10,75x68 Mauser	eagle27	04/08/09 05:00 PM
Re: 10,75x68 Mauser	eagle27	04/08/09 07:13 PM
Re: 10,75x68 Mauser	andrevannibos	04/08/09 07:36 PM
Re: 10,75x68 Mauser	eagle27	03/08/09 06:56 PM
Re: 10,75x68 Mauser	andrevannibos	03/08/09 11:29 PM
Re: 10,75x68 Mauser	grandveneur	12/04/09 06:14 PM
Re: 10,75x68 Mauser	VonGruff	12/04/09 06:47 PM
Re: 10,75x68 Mauser	lancaster	11/04/09 03:25 AM
Re: 10,75x68 Mauser	ozhunter	11/04/09 09:38 AM
Re: 10,75x68 Mauser	grandveneur	11/04/09 04:20 PM
Re: 10,75x68 Mauser	grandveneur	13/04/09 12:17 AM
Re: 10,75x68 Mauser	450_366	13/04/09 04:39 AM

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