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.585 Nyati
Type Rifle
Place of origin
Production history
Designer Ross Seyfried
Parent case .577 Nitro
Bullet diameter .585 in (Bad rounding hereScript error mm)
Rim diameter 0.640 in (Bad rounding hereScript error mm)
Case length 2.800 in (Bad rounding hereScript error mm)
Ballistic performance
Bullet weight/type Velocity Energy
750 gr (Bad rounding hereScript error g) Solid2,466 ft/s (Bad rounding hereScript error m/s)10,130 ft·lbf (Bad rounding hereScript error J)
Source(s): Accurate Reloading [1]

The .585 Nyati is a shoulder-fired rifle cartridge. Nyati (n-ya-te) means Cape Buffalo in many African languages such as Swahili. The .585 Nyati can generate 10,000 lb·ft (Script error N·m) of muzzle energy. This places it at or near the top of the list for most powerful cartridges that can be chambered in a rifle that can still be carried afield.

History Edit

The .585 Nyati was developed by Ross Seyfried. He was motivated by the desire to create a rifle with tremendous stopping power at a fraction of the cost of expensive double guns such as the various Nitro Express rounds. [2]

The rims were turned from .577 Nitro brass and the case blown out straight to allow formation of enough of a shoulder for headspace purposes. Brass formed by this method, during the developmental phase, had a relatively weak case head because the parent .577 Nitro case was designed for a double rifle which supports the case head all the way to the rim. In a bolt action rifle, a portion of the case head is unsupported and requires more strength in that area.

See alsoEdit


  1. 585 Nyati at Accurate Reloading web site
  2. Historical .585 Nyati Information

External linksEdit

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