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Double Rifles, Single Shots & Combinations >> Double Rifles

unspellable
.300 member

Reged: 06/03/04
Posts: 187
Loc: Iowa

Re: .375 H&H in a double rifle.
24/02/05 12:30 AM

The 375 H&H operates at lower pressures than the 458 Winchester.

Insofar as shooting the action loose, it isn't pressure but backthrust you have to consider. Calculate the backthrust from a 12 gauge shot shell and you'll quit worrying about your rifle.

The double rifle is perfectly capable of handling just as much pressure as a bolt action rifle. The weak point is extraction. The DR just doesn't have the mechanical advantage in extraction that the bolt action has. In the early smokeless days they experienced difficult extraction and kept the pressure low for that reason. The difficult extraction eventually proved to be a matter of pitted chambers and weak brass. The problem went away with the advent of clean chambers and better brass.

That said, there is no reason to run high pressures in a double since you are free to make the case as long as you please. The bolt action is forced to high pressures because you are limited in the size of the case. The only real reason to chamber a DR in 375 H&H or 458 Winchester is the readily available ammo.

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Subject	Posted by	Posted on
.375 H&H in a double rifle.	Kynoch	23/02/05 02:40 PM
Re: .375 H&H in a double rifle.	zimhunter	24/02/05 01:03 AM
Re: .375 H&H in a double rifle.	unspellable	24/02/05 12:30 AM
Re: .375 H&H in a double rifle.	4seventy	24/02/05 10:02 AM
Pressure in double	unspellable	25/02/05 10:56 AM
Re: Pressure in double	4seventy	25/02/05 11:44 AM
Re: Pressure in double	unspellable	26/02/05 12:19 AM
Re: Pressure in double	CptCurl	26/02/05 02:11 AM
Re: Pressure in double	new_guy	26/02/05 04:21 AM
Re: Pressure in double	DUGABOY1	26/02/05 06:37 AM
Re: Pressure in double	unspellable	02/03/05 09:30 AM
Re: Pressure in double	bonanza	25/04/06 11:44 PM
Re: Pressure in double	JPK	26/04/06 01:11 AM
Re: Pressure in double	vigillinus	27/04/06 06:21 PM
Re: Pressure in double	hoppdoc	26/04/06 03:13 AM
Re: Pressure in double	CptCurl	26/02/05 08:43 AM
Re: Pressure in double	bonanza	26/02/05 01:08 AM
Re: .375 H&H in a double rifle.	bonanza	24/02/05 01:06 AM
Re: .375 H&H in a double rifle.	CptCurl	23/02/05 11:59 PM
Re: .375 H&H in a double rifle.	Kynoch	23/02/05 04:10 PM
Re: .375 H&H in a double rifle.	NE450No2	23/02/05 05:01 PM
Re: .375 H&H in a double rifle.	new_guy	23/02/05 03:29 PM
Re: .375 H&H in a double rifle.	400NitroExpress	26/04/06 03:54 AM

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