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

eagle27
.400 member

Reged: 24/01/09
Posts: 1204
Loc: Rolleston, Christchurch, New Z...

Re: Mauser 10.75x68. Let's give it another chance!
26/10/24 12:35 PM

VC, I have heard that the 10.75x68 cartridge could at times suffer from some headspace issues due to the shallow case shoulder. Similar to the 400 Whelen cartridge, a heavy firing pin blow could allow the 10.75 case to move forward slightly in the chamber, enough to cause misfires with an indication on the primer of a light strike.
Again, like the Whelen cartridge, careful chambering and careful resizing of cases when reloading will help prevent misfires.
I have a supply of Berdan primed Kynoch 404 Jeffery ammunition from 1963 and have never experienced any issues when firing these cartridges. Perhaps your misfiring with your 10.75 Mauser is more to do with the chamber rather than the firing pin/spring or cartridges per se.

In reference to the RWS 400gr FMJ .423" bullet, when I obtained a supply of these from Australia for reloading my 404 back in the late 70's, they came with a short letter from the supplier warning of the issue of riveting with nickel jacketed bullets. However a simple test showed that the RWS bullets were in fact steel jacketed and while having thin sidewall jackets, they do have a good reinforced nose as can be seen in the image below of one I did section.
I shot a few Aussie buffalo with reloads using the RWS solids and they performed perfectly. The only bullet recovered from any buffalo was sandwiched in the rear hip ball and socket joint of a big bull after it had travelled full length from a frontal shot. The bullet had fishtailed at the rear of the bullet but the nose and jacket overall was intact.

RWS FMJ 401gr bullets, one sectioned showing reinforced nose.

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Subject	Posted by	Posted on
Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	28/09/24 04:03 AM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	28/09/24 04:21 AM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	28/09/24 04:58 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	29/09/24 02:13 AM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	29/09/24 03:17 AM
Re: Mauser 10.75x68. Let's give it another chance!	Rothhammer1	20/03/25 09:19 PM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	29/09/24 04:40 AM
Re: Mauser 10.75x68. Let's give it another chance!	eagle27	29/09/24 07:37 AM
Re: Mauser 10.75x68. Let's give it another chance!	Rolf	30/09/24 05:29 AM
Re: Mauser 10.75x68. Let's give it another chance!	Rule303	02/10/24 09:52 AM
Re: Mauser 10.75x68. Let's give it another chance!	rglenz	02/10/24 10:59 AM
Re: Mauser 10.75x68. Let's give it another chance!	Rolf	11/10/24 09:59 PM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	23/10/24 03:44 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	13/10/24 06:20 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	13/10/24 06:22 PM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	23/10/24 03:50 PM
Re: Mauser 10.75x68. Let's give it another chance!	mckinney	24/10/24 01:01 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	25/10/24 02:29 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	25/10/24 02:33 PM
Re: Mauser 10.75x68. Let's give it another chance!	Rule303	26/10/24 11:10 AM
Re: Mauser 10.75x68. Let's give it another chance!	93x64mm	26/10/24 10:24 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	28/10/24 04:34 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	28/10/24 07:30 AM
Re: Mauser 10.75x68. Let's give it another chance!	eagle27	26/10/24 12:35 PM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	26/10/24 01:15 PM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	14/10/24 12:18 AM
Re: Mauser 10.75x68. Let's give it another chance!	85lc	14/10/24 04:16 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	14/10/24 05:00 AM
Re: Mauser 10.75x68. Let's give it another chance!	eagle27	14/10/24 07:31 AM
Re: Mauser 10.75x68. Let's give it another chance!	JDL	23/10/24 06:55 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	23/10/24 11:41 AM
Re: Mauser 10.75x68. Let's give it another chance!	93x64mm	14/10/24 07:11 AM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	19/03/25 12:42 AM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	19/03/25 04:27 AM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	19/03/25 07:04 AM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	19/03/25 04:44 PM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	19/03/25 11:37 AM
Re: Mauser 10.75x68. Let's give it another chance!	eagle27	20/03/25 01:06 PM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	20/03/25 05:33 PM
Re: Mauser 10.75x68. Let's give it another chance!	eagle27	21/03/25 07:01 AM
Re: Mauser 10.75x68. Let's give it another chance!	9.3x57	21/03/25 07:31 AM
Re: Mauser 10.75x68. Let's give it another chance!	Claydog	20/03/25 06:24 PM
Re: Mauser 10.75x68. Let's give it another chance!	93x64mm	20/03/25 10:33 PM
Re: Mauser 10.75x68. Let's give it another chance!	Waidmannsheil	21/03/25 08:09 AM
Re: Mauser 10.75x68. Let's give it another chance!	Huvius	21/03/25 11:17 AM
Re: Mauser 10.75x68. Let's give it another chance!	Claydog	21/03/25 11:43 AM
Re: Mauser 10.75x68. Let's give it another chance!	Marrakai	21/03/25 12:29 PM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	21/03/25 11:27 AM
Re: Mauser 10.75x68. Let's give it another chance!	Waidmannsheil	21/03/25 02:49 PM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	22/03/25 03:04 AM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	22/03/25 09:26 PM
Re: Mauser 10.75x68. Let's give it another chance!	Igorrock	22/03/25 07:23 AM
Re: Mauser 10.75x68. Let's give it another chance!	rigbymauser	22/03/25 08:48 PM
Re: Mauser 10.75x68. Let's give it another chance!	9.3x57	23/03/25 01:15 AM
Re: Mauser 10.75x68. Let's give it another chance!	lancaster	23/03/25 03:26 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	23/03/25 04:23 AM
Re: Mauser 10.75x68. Let's give it another chance!	9.3x57	23/03/25 05:35 AM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	22/03/25 09:26 PM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	21/03/25 01:15 AM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	21/03/25 06:18 AM
Re: Mauser 10.75x68. Let's give it another chance!	rigbymauser	20/03/25 08:05 PM
Re: Mauser 10.75x68. Let's give it another chance!	Juglansregia	23/03/25 02:35 PM
Re: Mauser 10.75x68. Let's give it another chance!	DarylS	19/03/25 11:52 AM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	19/03/25 03:43 PM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	13/10/24 06:26 PM
Re: Mauser 10.75x68. Let's give it another chance!	93x64mm	30/09/24 06:03 AM
Re: Mauser 10.75x68. Let's give it another chance!	85lc	01/10/24 01:33 AM
Re: Mauser 10.75x68. Let's give it another chance!	Vintage_Canvas	01/10/24 02:05 AM
Re: Mauser 10.75x68. Let's give it another chance!	93x64mm	01/10/24 06:06 AM
Re: Mauser 10.75x68. Let's give it another chance!	jvw	01/10/24 02:50 PM
Re: Mauser 10.75x68. Let's give it another chance!	NitroX	02/10/24 12:31 AM
Re: Mauser 10.75x68. Let's give it another chance!	buckstix	28/09/24 10:01 AM

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