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

DarylS
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Reged: 10/08/05
Posts: 26992
Loc: Beautiful British Columbia, Ca...

Re: 375 H&H vs 9.3x62-Cartridge-clash
10/09/20 10:13 AM

I believe the charge was 68.0gr. BLC2 with a CCI250 primer with the 270gr. Speer, which turned out to be a VERY soft bullet when driven at a low 2,300 fps from my 9.3x57.
My load with the 286gr. was 65.0 BLC2.
I worked up to those from well below and they were quite safe in my rifle.
I see now that Hodgdon only goes to 66.0gr. with the 270 Speer bullet. From what happened to the 270 Speer from my light load in the 9.3x57, I would expect that bullet to fragment badly if it strikes with more than 2,000fps. Vel.

In my .375/06IMP, a charge of 66.0gr. BLC2 delivered a 270 Barnes TSX at excessive speed and I reduced its charge, perhaps not enough and they are still smoking hot at 2,650fps.
It is possible the BLC2 of 2010 is hotter than the BLC2 of 1984.

Both of these rounds have the same capacity of 78.0gr. With identical loads using the same bullet characteristics should produce similar pressures, with the larger bore developing less pressure.
Since I was using the TSX in the .375, that will have increased its pressure somewhat. I was shocked to find 2gr. Less powder(66) in the .375 produced and additional 70fps over the 9.3x62. That scared me so I reduced the load to 63.0 gr. For an even 2,650fps.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

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Subject	Posted by	Posted on
375 H&H vs 9.3x62-Cartridge-clash	Ripp	09/09/20 02:18 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	09/09/20 07:08 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	09/09/20 07:26 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	09/09/20 08:55 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	93x64mm	09/09/20 10:12 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	DarylS	10/09/20 02:04 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	10/09/20 02:37 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	DarylS	10/09/20 10:13 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	10/09/20 01:09 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	DarylS	10/09/20 03:18 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	10/09/20 06:21 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	10/09/20 11:37 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	11/09/20 02:24 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	11/09/20 11:42 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	szihn	12/09/20 01:04 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	12/09/20 07:08 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	12/09/20 07:23 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	rpeck	26/08/21 10:07 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	28/08/21 07:50 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Homer	29/08/21 09:07 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Northman	01/09/21 01:08 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	05/09/21 07:57 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	05/09/21 08:27 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	05/09/21 09:44 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	crshelton	05/09/21 10:42 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	kodiak	05/09/21 01:40 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	05/09/21 09:46 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	05/09/21 10:20 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	9.3x57	07/09/21 09:00 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	06/09/21 07:19 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	06/09/21 08:40 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	07/09/21 09:07 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Northman	08/09/21 08:50 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	9.3x57	07/09/21 09:12 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	07/09/21 07:00 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	PatagonHunter	07/09/21 07:14 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	02/09/21 03:27 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	03/09/21 02:24 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	rpeck	03/09/21 10:57 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	topcat	04/09/21 09:04 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	27/08/21 02:04 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	27/08/21 01:42 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	rpeck	23/12/21 10:04 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	260rem	23/12/21 01:28 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Postman	26/08/21 11:25 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	27/08/21 02:03 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	9.3x57	07/09/21 11:03 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	12/09/20 06:56 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	NitroX	11/09/20 02:08 PM
Re: 375 H&H vs 9.3x62-Cartridge-clash	crshelton	11/09/20 04:48 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rule303	11/09/20 07:05 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	11/09/20 11:03 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	EDELWEISS	11/09/20 09:46 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Ripp	11/09/20 10:59 AM
Re: 375 H&H vs 9.3x62-Cartridge-clash	Rod4861	10/09/20 07:46 PM

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