| .585 Nyati | |
| Type: | Rifle |
| Designer: | Ross Seyfried |
| Parent: | .577 Nitro Express |
| Bullet: | .585 |
| Rim Dia: | 0.640 |
| Case Length: | 2.800 |
| Bw1: | 750 |
| Btype1: | Solid |
| Vel1: | 2466 |
| En1: | 10130 |
| Balsrc: | Accurate Reloading [1] |
The .585 Nyati (14.9×71mmRB) 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 10000-2NaN-2 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.
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.