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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles
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chuck375
.333 member


Reged: 13/10/07
Posts: 445
Loc: Colorado Springs CO
Re: Designing your own cartridge. Worth it?
      01/06/15 10:04 AM

There's probably room for a new big bore between .510 and .577. Maybe base it on the 505 Gibbs case with a bore of .525 ((525 Gibbs)? A 650g bullet at 2400 fps gives you an SD of .336, Penetration Index (based on the "Any Shot You Want" formula) of 130 (better than the 416 Rigby shooting a 400g bullet at 2400 fps), kinetic energy of 8331 ft/lbs, Taylor KO factor of 117, and recoil in a 13 lb gun at a sedate 118.69 ft/lbs.

Or Maybe a 475 Gibbs shooting a 500g bullet at 2700 fps? Gives you a kinetic energy of 8091 ft/lbs with less recoil than the 525 above, flat shooting as a 30-06 with a little more recoil and knockdown power.

--------------------
"There's a saying in prize fighting: Everyone's got a plan until they get hit"

Michael Douglas "The Ghost And The Darkness"

Edited by chuck375 (01/06/15 11:10 AM)

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Subject Posted by Posted on
* Designing your own cartridge. Worth it? Wanabebwana 25/05/15 07:34 AM
. * * Re: Designing your own cartridge. Worth it? Homer   25/05/15 06:29 PM
. * * Re: Designing your own cartridge. Worth it? Waidmannsheil   26/05/15 07:07 AM
. * * Re: Designing your own cartridge. Worth it? xausa   26/05/15 08:53 AM
. * * Re: Designing your own cartridge. Worth it? xausa   26/05/15 09:45 PM
. * * Re: Designing your own cartridge. Worth it? Wanabebwana   27/05/15 01:06 AM
. * * Re: Designing your own cartridge. Worth it? Huvius   27/05/15 01:43 AM
. * * Re: Designing your own cartridge. Worth it? DarylS   27/05/15 05:11 AM
. * * Re: Designing your own cartridge. Worth it? Homer   27/05/15 07:32 AM
. * * Re: Designing your own cartridge. Worth it? Ash   27/05/15 07:54 PM
. * * Re: Designing your own cartridge. Worth it? Homer   28/05/15 10:27 AM
. * * Re: Designing your own cartridge. Worth it? Ash   28/05/15 04:13 PM
. * * Re: Designing your own cartridge. Worth it? Homer   28/05/15 06:40 PM
. * * Re: Designing your own cartridge. Worth it? chuck375   01/06/15 10:04 AM
. * * Re: Designing your own cartridge. Worth it? Wanabebwana   02/06/15 02:18 PM
. * * Re: Designing your own cartridge. Worth it? chuck375   02/06/15 02:30 PM
. * * Re: Designing your own cartridge. Worth it? Ash   02/06/15 04:19 PM
. * * Re: Designing your own cartridge. Worth it? db404   13/05/16 01:00 AM
. * * Re: Designing your own cartridge. Worth it? DarylS   26/05/15 09:08 AM
. * * Re: Designing your own cartridge. Worth it? gryphon   26/05/15 12:53 PM
. * * Re: Designing your own cartridge. Worth it? Well_Well_Well   25/05/15 06:57 PM
. * * Re: Designing your own cartridge. Worth it? DarylS   26/05/15 05:18 AM
. * * Re: Designing your own cartridge. Worth it? DarylS   26/05/15 05:25 AM

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