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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: Shotgun with a hidden third fastener?
02/02/08 11:17 AM

What, powders faster than IMR 4227, like N110 and N120 Vit ?

With two or more powders that can be considered suitible at either extreme of the burning rate for a given cartridge, If velocities are comparable, barrel time is the same, peak pressure is similar.
Can you explain to me why given that total barrel time in a 22 inch barrel is around 9/10000sec, you think that the different Pt curves of either powder take say RL15-H4831 should be significant on the fulcrum stress on the action.

I do not in any event agree with your premis. If you take Data for .470 NE
("Any shot you want" Pg 576) You will note that the faster RL 15 reaches a pressure of 42,900 PSI to generate the same velocity that H4831 does at 36,100psi. An increase of 18% and in fact exceed the MAP for the cartridge.
If you are worried about stress on an action then it just got 18% worse.

Quote "Hey, bullseye will work ! why do ya think Fast burning/pistol powder is used in shotgun shells ???" End Quote

If you believe that you can safely generate 2150 fps with a charge of Bulleye behind a 500 grain head then you are in a distinguished minority.

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Subject	Posted by	Posted on
Shotgun with a hidden third fastener?	Gary6034	25/11/07 06:02 AM
Re: Shotgun with a hidden third fastener?	500Nitro	25/11/07 06:09 AM
Re: Shotgun with a hidden third fastener?	Gary6034	25/11/07 12:12 PM
Re: Shotgun with a hidden third fastener?	Judson	27/01/08 11:02 AM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	28/01/08 03:07 PM
Re: Shotgun with a hidden third fastener?	Bramble	01/02/08 01:32 PM
Re: Shotgun with a hidden third fastener?	JabaliHunter	01/02/08 09:42 PM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	02/02/08 03:41 AM
Re: Shotgun with a hidden third fastener?	DarylS	02/02/08 05:18 AM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	02/02/08 09:14 AM
Re: Shotgun with a hidden third fastener?	Bramble	02/02/08 11:17 AM
Re: Shotgun with a hidden third fastener?	Marrakai	02/02/08 01:50 PM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	03/02/08 03:47 PM
Re: Shotgun with a hidden third fastener?	Bramble	04/02/08 03:02 AM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	04/02/08 06:48 AM
Re: Shotgun with a hidden third fastener?	Bramble	04/02/08 09:16 AM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	04/02/08 12:46 PM
Re: Shotgun with a hidden third fastener?	Bramble	04/02/08 01:45 PM
Re: Shotgun with a hidden third fastener?	squirrelmonkey1	04/02/08 02:53 PM
Re: Shotgun with a hidden third fastener?	Judson	07/02/08 09:45 AM
Re: Shotgun with a hidden third fastener?	450_366	18/02/08 07:32 AM
Re: Shotgun with a hidden third fastener?	Huvius	27/02/08 11:47 AM
Re: Shotgun with a hidden third fastener?	Gary6034	10/03/08 12:30 PM
Re: Shotgun with a hidden third fastener?	gallatin	01/02/08 04:54 PM

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