Rifle · Not SAAMI standardized

.585 Nyati

.585 Nyati Buffalo

Extremely powerful bolt-action dangerous-game cartridge from Canyon Cartridge Corp.

Caliber
0.585″ · 14.859 mm
Introduced
1994
Case
Rimless
Primary use
Hunting
Status
Active
Velocity2,350–2,500 fps
Energy9,197–10,408 ft·lb
Typical grains600 · 750 gr
Identity
Introduced
1994
Type
Rifle
Origin
United States
Inventor
Canyon Cartridge Corp
Manufacturer
Canyon Cartridge Corp
Standard
Not SAAMI standardized
Status
Active
Availability
Rare
Build
Case capacity
200 gr H₂O
Twist (typical)
1:16
Primer
Large Rifle Magnum
Case type
Rimless
Pressure & range
Max pressure
47,000 psi
Eff. range
100 yd
Max range
300 yd
Recoil
75–100 ft·lb

Ballistics

Representative trajectory · 100 yd zero0–800 yd
100 yd · zero0″−156″156″ drop @ 800 yd0400800Open in Ballistic Compare ↗
By real loads
2,100–2,350 fps · 20 loads
Parent case

Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).

Performance

Best for HuntingWoodleigh Heavy Grade750 gr · FMJ-BT · 2,350 fpsBuy now →

Buy links open .585 Nyati ammunition at Rivertown Munitions.

Dimensionscase measurements · scale drawing · size vs familiar rounds

Case dimensions — the scale drawing at the top of the page is built from these.

SAAMI · approximate
Measuremmin
Bullet ⌀14.860.585~
Neck ⌀15.370.605~
Shoulder ⌀16.510.650~
Shoulder angle
Base ⌀16.640.655~
Rim ⌀16.260.640~
Belt ⌀n/a
Rim thickness
Neck length12.700.500
Case length71.122.800~
Overall length93.983.700~

Size vs familiar rounds

Drawn at true 1:1 — every case is accurate relative to the others. Absolute size depends on your screen's pixel density, so measuring one against a real ruler may be off. .585 Nyati is highlighted below.

Missing a dimension for .585 Nyati? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.

Factory loads

In production — 20 active loads across 14 brands. Top 15 shown · see all 20 →.

BrandLoadGrainBulletFPSft·lbBC
WoodleighHeavy Grade750FMJ-BT2,3509,195
HornadyDGX750DGX2,3509,195
A-SquareDead Tough SP750Dead Tough SP2,3509,195
A-SquareMonolithic Solid FMJ750FMJ Solid2,3509,195
NorthforkFMJ Bonded Solid750FMJ Solid2,3509,195
BertramCustom750SP2,3509,195
KynochSP Soft Nose750Soft Nose2,3509,195
KynochSafari750SP2,3509,195
FederalTrophy Bonded750TBT2,3509,195
PPURange750FMJ2,3509,195
GrafFMJ Standard600Soft Point2,3007,047
Sellier & BellotSP600Soft Point2,3007,047
NormaAfrica PH600Soft Point2,3007,047
BertramCustom600Soft Point2,3007,047
RWSClassic600Soft Point2,3007,047

Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.

Suitable powders

1 reloading powder listed for .585 Nyati, fastest to slowest. Cross-reference in the finder →

Reloading costestimate cost per round vs factory

Estimate your cost per round and how it compares to factory. Inputs are yours — nothing is stored.

Cost estimate only — not load data. Charge weight is your input; follow published manuals for safe charges.

Connected reference

History

Introduced in 1994 by Canyon Cartridge Corp as a dangerous-game alternative to the .577 Tyrannosaur. The .585 Nyati fires the same .585-diameter bullet as .600 Nitro Express in a compact bolt-action package. Extremely limited production — ammunition and brass must be sourced from specialty suppliers. The cartridge never achieved commercial traction beyond a small community of dedicated African hunters.

FAQs

What twist rate does .585 Nyati use?
.585 Nyati typically uses a 1:16 twist rate.
What bullet diameter is .585 Nyati?
.585 Nyati uses a 0.585″ (14.859 mm) diameter bullet.
Is .585 Nyati still in production?
.585 Nyati is active; typical availability is rare.
What is .585 Nyati used for?
.585 Nyati is primarily used for hunting.
What are the best powders for .585 Nyati?
Reloading powders commonly listed for .585 Nyati include Reloader 33.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 20 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →