.585 Nyati or .577 Tyrannosaur info needed

jwwe...@indiana.edu

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Mar 23, 1998, 3:00:00 AM3/23/98

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Hello

I'm trying to collect information on these two cartridges. If anyone
has any info on either of them I would really appreciate an e-mail.
Thanks!

Jim

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justme

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Mar 24, 1998, 3:00:00 AM3/24/98

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Well since you ask, I don't have any info on the 585 Nyati but according
to my little article here on the big bore guns, the 577 tyrannosaur was
developed in 1993 and it will send a 750 grain .585 diameter bullet at
2460 fps for a developed energy of 9591 ft. pounds, which is 691 ft.
lbs more than the 700 nitro express, or it is over double the amount of
energy of the 458 win mag. with a 500 grain bullet. I'm not sure that
it would be all that pleasant to shoot, but it should stop a charging
buffalo no problem.

Dane

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Mar 25, 1998, 3:00:00 AM3/25/98

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justme <jus...@iwillapabay.org> wrote in article
<3517345C...@iwillapabay.org>...

> Well since you ask, I don't have any info on the 585 Nyati but according
> to my little article here on the big bore guns, the 577 tyrannosaur was
> developed in 1993 and it will send a 750 grain .585 diameter bullet at
> 2460 fps for a developed energy of 9591 ft. pounds, which is 691 ft.
> lbs more than the 700 nitro express, or it is over double the amount of
> energy of the 458 win mag. with a 500 grain bullet. I'm not sure that
> it would be all that pleasant to shoot, but it should stop a charging
> buffalo no problem.
>
> jwwe...@indiana.edu wrote:
>
> > Hello
> >
> > I'm trying to collect information on these two cartridges. If anyone
> > has any info on either of them I would really appreciate an e-mail.
> > Thanks!
> >
> > Jim
>

585 Nyati: Means "Cape Buffalo" in several African languages. Round
developed by Ross Seyfried after he was charged by an elephant and fealt
his
450 Nitro Express was inadequate.....

Loading data that I have on the 585 shows velocity of 2525 fps and
muzzle energy of 10,625 ft-lbs with RL-15 powder (powder load left out
intentionally).

Unlike the double rifles that you normally see shooting the big Nitros,
the
Nyati can be built on any standard length Magnum Mauser bolt action and
holds
4 rounds (one in chamber and 3 in magazine).

Be forewarned, this baby kicks!! Somewhere on the order of 220 ft-lbs
of
recoil energy.
In comparison, a .30-06 will boot you with about 20-22 ft-lbs...the Nyati
kicks you 10-11 times
harder than the 06 does!! I read an article somewhere that says the Nyati
recoil is quite
literally on the edge of human body limits. This thing CAN cause injury
and break shoulder bones
of the shooter. Slight of stature, frail or generally small boned folks
need not apply....

Leeton4

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Mar 26, 1998, 3:00:00 AM3/26/98

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.585 Nyati or .577 Tyrannosaur info

The .5855 Nyati was formulated by Ross Seyfreid after a 4500 NE failed him on
an elephant. It can push a 750gr in excess of 2500 fps creating a ME of 10,500
fp. This can generate a recoil in excess of ten thimes that of a 30-06. Look
in Cartridges of the World Ed. 7 for more info.

Harold Leahy

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Mar 26, 1998, 3:00:00 AM3/26/98

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.557 Tyrannosaur
Any Shot You Want The A-Square Handloading and Rifle Manual pages
612-615 Cartridges of the World 8th Edition page 229

.585 Nyati
Cartridges of the World 8th Edition page 198

Hal
jwwe...@indiana.edu wrote in message <351411...@indiana.edu>...

>Hello
>
>I'm trying to collect information on these two cartridges. If anyone
>has any info on either of them I would really appreciate an e-mail.
>Thanks!

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