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Shooting & Reloading - Mausers, Big Bores and others >> Lee Speed Forum & Archive

DarylS
.700 member

Reged: 10/08/05
Posts: 27193
Loc: Beautiful British Columbia, Ca...

Re: Custom 348Win Lee Speed
15/12/10 03:02 AM

Any .45/70-type ctg. chambered up in a #3, will take any pressure the action can withstand on a regular basis. There is no problem with strength in modern brass. Marlin ran a Marlin lever gun to 70,000psi and it extracted normally, without damamge to brss nor rifle, of course. This was a test only of gun and brass - not a normal usable load. modern brass won't take that sort of pressure, ie: .270, .338 mag. whatever, as the primer pockets will expand. The rim itself gives immense strength to the brass, coupled, of course, with modern heat treatment.

The low pressure SAAMI ahd CIP numbers for the .45/70 are due to the old actions still in use, ie: Springfields and other original black powder rifles not suitable for heavy charges of smokeless powders.

This does not hold over to the modern guns, of which the #3 is one. #4's & #5's are even better in the strength department.

They can be loaded to any pressure the .303 is suitable for in #3's and higher yet in the stronger actions.

Even a #3 will run 400gr. to 2,100fps.

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

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

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Subject	Posted by	Posted on
Custom 348Win Lee Speed	Sarg	24/05/10 08:40 PM
Re: Custom 348Win Lee Speed	375BSA	26/05/10 02:40 AM
Re: Custom 348Win Lee Speed	bonanza	26/05/10 10:07 AM
Re: Custom 348Win Lee Speed	DarylS	27/05/10 08:49 AM
Re: Custom 348Win Lee Speed	VAnimrod	31/05/10 05:37 AM
Re: Custom 348Win Lee Speed	Con	04/06/10 11:05 PM
Re: Custom 348Win Lee Speed	Phillip	10/06/10 07:32 AM
Re: Custom 348Win Lee Speed	DarylS	11/06/10 12:41 AM
Re: Custom 348Win Lee Speed	Sarg	26/05/10 06:44 AM
Re: Custom 348Win Lee Speed	375BSA	26/05/10 07:59 AM
Re: Custom 348Win Lee Speed	DarylS	26/05/10 09:07 AM
Re: Custom 348Win Lee Speed	mehulkamdar	25/05/10 08:47 AM
Re: Custom 348Win Lee Speed	VAnimrod	25/05/10 08:01 AM
Re: Custom 348Win Lee Speed	Riflemanusmc	14/12/10 03:32 PM
Re: Custom 348Win Lee Speed	458Win	14/12/10 04:56 PM
Re: Custom 348Win Lee Speed	FATBOY404	14/12/10 10:46 PM
Re: Custom 348Win Lee Speed	9.3x57	15/12/10 12:20 AM
Re: Custom 348Win Lee Speed	DarylS	15/12/10 03:02 AM
Re: Custom 348Win Lee Speed	hunter_angler	16/12/10 01:40 AM
Re: Custom 348Win Lee Speed	DarylS	16/12/10 03:03 AM

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