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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

DarylS
.700 member


Reged: 10/08/05
Posts: 27663
Loc: Beautiful British Columbia, Ca...
Re: .500 Belted Magnum
      07/12/11 04:17 AM

xausa - I am surprised at the ballistics of the straight case using a mere 80gr. of what would be a fairly slow powder in the straight case - in comparrison to your 90gr. 4064 (slightly faster) load in a greater capacity case.

This is, unless you are running substancially lower pressures - while the straight case at 2.5" is running max pressures for it's design, say 55,000psi.

As far as barrel length goes, I saw little change in my own testing when using such efficient rounds (yes there was some drop in vel., but not like large cased, small bullet rounds).

What I did see, was the greater capacity case needed considerably more powder to match the speed of a smaller case, but higher pressure load.

The similarity between these two rounds is virtually identical to what I got with the .458 Alaskan at 2.1" compared to a .45/70, also 2.1" in a bolt gun. It took a lot more powder in the .458, to match a top-end load for the smaller case, but the greater capacity of the larger case could do, oh, so much more. But of course, how much more is necessary in these large rounds - it's fun, though.

Those .50's are pretty cool rounds! Like a .450 Dakota compared to a .458 Win Mag.

--------------------
Daryl


"a gun without hammers is like a Spaniel without ears" King George V

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Entire topic
Subject Posted by Posted on
* .500 Belted Magnum Ash 19/11/11 07:27 PM
. * * Re: .500 Belted Magnum Ash   05/12/11 07:04 PM
. * * Re: .500 Belted Magnum xausa   06/12/11 06:41 AM
. * * Re: .500 Belted Magnum Ash   06/12/11 05:53 PM
. * * Re: .500 Belted Magnum xausa   06/12/11 10:46 PM
. * * Re: .500 Belted Magnum DarylS   07/12/11 04:17 AM
. * * Re: .500 Belted Magnum DarylS   20/11/11 03:23 AM
. * * Re: .500 Belted Magnum SingleShot   02/12/11 03:03 PM
. * * Re: .500 Belted Magnum xausa   03/12/11 12:09 AM
. * * Re: .500 Belted Magnum chuck375   03/12/11 01:24 AM
. * * Re: .500 Belted Magnum DarylS   03/12/11 04:45 AM
. * * Re: .500 Belted Magnum Ash   04/12/11 01:24 PM
. * * Re: .500 Belted Magnum 500Boswell   04/12/11 04:41 PM
. * * Re: .500 Belted Magnum chuck375   05/12/11 02:58 AM
. * * Re: .500 Belted Magnum xausa   20/11/11 02:01 AM

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