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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles
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mauserand9mm
.400 member


Reged: 03/09/09
Posts: 1040
Loc: Queensland, Australia
Re: cast loads in 458WM
      25/03/10 09:58 AM

I'm confident that they are hard enough and the right size (the first few will shoot straight until, I think, the barrel leads up) and that a gas check would probably fix the problem at the higher velocities.

Would an undersize projectile (not gas checked) cause barrel leading if the velocity were otherwise within the range appropriate for that particular lead alloy hardness? I guess any gas sneeking past would tend to melt the lead wouldn't it?

There's a lot of info out there - another guy I have spoken to has advised that I steer clear of the conventional pistol powders in the larger rifle cases (especially the straight walled ones) since they do occassionally ring the chamber, even if no filler material is used. Trailboss is different of course since it fills the case - the empty space and faster powders cause the problems. I can understand the dynamics since the same thing can happen if gas is ignited within connected enclosures that don't have appropriate sealing arrangements - the effect is called "pressure piling". The initial explosion will compress the gas at the other end until it do ignites and then sends a pressure wave back to the original expolsion source. "Pinging" is petrol engines is also an example of this.

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Subject Posted by Posted on
* cast loads in 458WM mauserand9mm 07/03/10 09:00 PM
. * * Re: cast loads in 458WM bonanza   30/04/10 12:49 AM
. * * Re: cast loads in 458WM mauserand9mm   30/04/10 08:41 PM
. * * Re: cast loads in 458WM mauserand9mm   17/05/10 01:29 PM
. * * Re: cast loads in 458WM mauserand9mm   05/11/10 07:59 AM
. * * Re: cast loads in 458WM DarylS   05/11/10 11:49 AM
. * * Re: cast loads in 458WM mauserand9mm   05/11/10 09:57 AM
. * * Re: cast loads in 458WM DarylS   06/11/10 03:32 AM
. * * Re: cast loads in 458WM VonGruff   06/11/10 05:58 AM
. * * Re: cast loads in 458WM mauserand9mm   07/11/10 08:39 PM
. * * Re: cast loads in 458WM Tatume   07/03/10 11:01 PM
. * * Re: cast loads in 458WM bonanza   08/11/10 03:17 AM
. * * Re: cast loads in 458WM mauserand9mm   08/03/10 10:30 AM
. * * Re: cast loads in 458WM Tatume   08/03/10 11:35 PM
. * * Re: cast loads in 458WM mauserand9mm   09/03/10 11:31 AM
. * * Re: cast loads in 458WM 450_Ackley   09/03/10 04:28 PM
. * * Re: cast loads in 458WM Tatume   09/03/10 11:12 PM
. * * Re: cast loads in 458WM DarylS   10/03/10 03:26 AM
. * * Re: cast loads in 458WM 450_Ackley   10/03/10 07:38 AM
. * * Re: cast loads in 458WM mauserand9mm   10/03/10 11:52 AM
. * * Re: cast loads in 458WM Tatume   11/03/10 12:24 AM
. * * Re: cast loads in 458WM DarylS   11/03/10 12:40 PM
. * * Re: cast loads in 458WM 450   11/03/10 04:39 PM
. * * Re: cast loads in 458WM mauserand9mm   11/03/10 10:19 PM
. * * Re: cast loads in 458WM DarylS   12/03/10 01:49 AM
. * * Re: cast loads in 458WM mauserand9mm   12/03/10 11:29 AM
. * * Re: cast loads in 458WM DarylS   13/03/10 04:00 AM
. * * Re: cast loads in 458WM Tatume   13/03/10 06:45 AM
. * * Re: cast loads in 458WM gwindrider1   16/03/10 12:28 PM
. * * Re: cast loads in 458WM mauserand9mm   18/03/10 11:44 AM
. * * Re: cast loads in 458WM 450_Ackley   18/03/10 07:04 PM
. * * Re: cast loads in 458WM 450   23/03/10 08:24 PM
. * * Re: cast loads in 458WM DarylS   24/03/10 07:12 AM
. * * Re: cast loads in 458WM mauserand9mm   24/03/10 01:50 PM
. * * Re: cast loads in 458WM DarylS   24/03/10 11:19 PM
. * * Re: cast loads in 458WM mauserand9mm   25/03/10 09:58 AM
. * * Re: cast loads in 458WM eagle27   25/03/10 05:29 PM
. * * Re: cast loads in 458WM DarylS   26/03/10 01:00 AM
. * * Re: cast loads in 458WM greenshoots   26/03/10 06:08 AM
. * * Re: cast loads in 458WM 86thecat   29/03/10 12:55 PM
. * * Re: cast loads in 458WM mauserand9mm   29/04/10 08:51 PM
. * * Re: cast loads in 458WM DarylS   29/04/10 10:00 PM
. * * Re: cast loads in 458WM mauserand9mm   14/03/10 08:43 PM
. * * Re: cast loads in 458WM eagle27   14/03/10 09:09 PM
. * * Re: cast loads in 458WM Tatume   14/03/10 10:57 PM
. * * Re: cast loads in 458WM DarylS   15/03/10 02:52 AM
. * * Re: cast loads in 458WM mauserand9mm   15/03/10 09:54 AM
. * * Re: cast loads in 458WM DarylS   15/03/10 10:22 AM
. * * Re: cast loads in 458WM 9dot3x74R   15/03/10 12:19 PM
. * * Re: cast loads in 458WM DarylS   15/03/10 12:59 PM
. * * Re: cast loads in 458WM mauserand9mm   15/03/10 02:10 PM
. * * Re: cast loads in 458WM 450_Ackley   15/03/10 06:14 PM
. * * Re: cast loads in 458WM 450   12/03/10 04:56 PM
. * * Re: cast loads in 458WM DarylS   10/03/10 12:25 PM
. * * Re: cast loads in 458WM 86thecat   10/03/10 05:18 PM
. * * Re: cast loads in 458WM 450_Ackley   08/03/10 02:22 PM
. * * Re: cast loads in 458WM DarylS   08/03/10 03:25 PM
. * * Re: cast loads in 458WM mauserand9mm   08/03/10 06:07 PM
. * * Re: cast loads in 458WM 450_Ackley   08/03/10 08:44 PM

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