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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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Entire topic
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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