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Double Rifles, Single Shots & Combinations >> Building Double Rifles & Gunsmithing

Bramble
.375 member

Reged: 29/07/06
Posts: 950
Loc: England

Re: Extra set of DR barrels
08/09/08 07:43 AM

Firstly forget CUP. You cannot work with that unit in any meaningfull way. Look up the CIP Max average pressure in PSI or Kgcm2.

Explosive force (the wrong term as propelents do not explode) or steady state, no matter. Peak force is the critical thing.

"If it looks right, chances are it is right."

With the greatest of respect, with a firearm that is akin to "hold my beer and watch this"

When I gave you the calcs for the 30-40 you will note that I gave a margin of error of 100%. Even at 200% it is still well within range of a 20G action.

If you take the published English thrust figures from past and try to make them stack up agains this method it dosent work. They were done with a base crusher and compared one cartridge to another not to an empirical standard as such. For instence by this method the 416 Rigby comes out at 5.76 tons, whereas in the published data it is listed at 17 tons. So 200% error somewhere.

This just cannot be settled until somebody does base thrust with piezo.

Regards

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Subject	Posted by	Posted on
Extra set of DR barrels	Squarebridge	26/08/08 06:50 AM
Re: Extra set of DR barrels	450_366	26/08/08 07:33 AM
Re: Extra set of DR barrels	Squarebridge	26/08/08 09:38 AM
Re: Extra set of DR barrels	NitroX	07/09/08 08:11 PM
Re: Extra set of DR barrels	Huvius	31/08/08 12:33 AM
Re: Extra set of DR barrels	Bramble	31/08/08 02:45 AM
Re: Extra set of DR barrels	Huvius	06/09/08 02:53 AM
Re: Extra set of DR barrels	450_366	06/09/08 04:25 AM
Re: Extra set of DR barrels	Bramble	06/09/08 08:20 AM
Re: Extra set of DR barrels	Squarebridge	06/09/08 03:10 PM
Re: Extra set of DR barrels	Bramble	08/09/08 07:43 AM
Re: Extra set of DR barrels	450_366	06/09/08 05:33 PM
Re: Extra set of DR barrels	450_366	03/09/08 08:12 PM
Re: Extra set of DR barrels	Bramble	04/09/08 02:13 AM
Re: Extra set of DR barrels	450_366	04/09/08 05:02 AM
Re: Extra set of DR barrels	Paul	04/09/08 07:55 PM
Re: Extra set of DR barrels	450_366	05/09/08 03:41 AM
Re: Extra set of DR barrels	Birdhunter50	09/09/08 08:15 AM
Re: Extra set of DR barrels	Squarebridge	04/09/08 11:16 PM
Re: Extra set of DR barrels	Squarebridge	01/09/08 11:58 AM
Re: Extra set of DR barrels	tecno	30/08/08 12:20 AM
Re: Extra set of DR barrels	500Nitro	30/08/08 06:39 AM
Re: Extra set of DR barrels	tecno	10/09/08 05:40 PM
Re: Extra set of DR barrels	Squarebridge	10/09/08 11:15 PM
Re: Extra set of DR barrels	tecno	13/09/08 11:14 PM
Re: Extra set of DR barrels	tecno	15/02/14 09:33 PM
Re: Extra set of DR barrels	Ckhobart	16/02/14 08:29 AM
Re: Extra set of DR barrels	MotelAlpha	10/03/14 12:58 AM
Re: Extra set of DR barrels	Bramble	30/08/08 11:06 AM
Re: Extra set of DR barrels	500Nitro	30/08/08 02:16 PM
Re: Extra set of DR barrels	Bramble	30/08/08 11:29 PM
Re: Extra set of DR barrels	500Nitro	31/08/08 12:20 AM
Re: Extra set of DR barrels	tecno	30/08/08 01:15 AM
Re: Extra set of DR barrels	Squarebridge	01/09/08 12:11 PM

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