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Rifle · CIP · Not SAAMI standardized · CIP standardizedObsolete

.350 Rigby Magnum

Also known as .350 Rigby

.350 Rigby Magnum is a rimless bottlenecked rifle cartridge of United Kingdom origin.

Caliber
0.3571″ · 9.07 mm
Introduced
1908
Case
Rimless
Primary use
Hunting
Status
Obsolete
Obsolete
Obsolete

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Velocity2,625 fps
Energy3,440 ft·lb
Identity
Introduced
1908
Type
Rifle
Origin
United Kingdom
Inventor
John Rigby & Company
Manufacturer
John Rigby & Co.
Standard
CIP · Not SAAMI standardized · CIP standardized
SAAMI
Not SAAMI standardized
Obsolete
Obsolete
Status
Obsolete
Availability
Collector
Build
Case capacity
88.8 gr H₂O
Twist (typical)
1:12.0
Primer
Large Rifle Magnum
Case type
Rimless
Pressure & range
Max pressure
44,962 psi, CIP transducer
Eff. range
300 yd
Max range
1500 yd
Recoil
28.1 ft·lb

Introduced by John Rigby & Co.

Ballistics

Representative trajectory · velocity only, no drag model · 100 yd zero0–800 yd
-140" -120" -100" -80" -60" -40" -20" 0" Line of sight 0 yd 100 yd 200 yd 300 yd 400 yd 500 yd 600 yd 700 yd 800 yd 100 yd zero 141″ drop @ 800 yd
Drop Zero

Velocity only, no drag model: no published ballistic coefficient is on file for .350 Rigby Magnum, so this is the shape gravity alone gives the advertised velocity. Drag would steepen it. The tool below solves real loads through their published G1 or G7 model.

Open in Ballistic Compare
Parent case
—

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

Dimensionscase measurements · scale drawing · size vs familiar rounds

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

CIP TDCC · verified
Measuremmin✓
Bullet ⌀ 9.070.357 ✓
Neck ⌀ 9.750.384 ✓
Shoulder ⌀ 11.430.450 ✓
Shoulder angle 45°— ≈
Base ⌀ 13.160.518 ✓
Rim ⌀ 13.360.526 ✓
Belt ⌀ n/a
Rim thickness 1.520.060 ✓
Neck length 11.860.467 ≈
Case length 69.852.750 ✓
Overall length 90.803.575 ✓

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. .350 Rigby Magnum is highlighted below.

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.

Firearms chambered in .350 Rigby Magnum

John Rigby & Co. Sporter .350 Rigby Magnum 24-inch

Connected reference

History

Introduced around 1908 by John Rigby & Company.

FAQs

What twist rate does .350 Rigby Magnum use?
.350 Rigby Magnum typically uses a 1:12.0 twist rate.
What bullet diameter is .350 Rigby Magnum?
.350 Rigby Magnum uses a 0.3571″ (9.07 mm) diameter bullet.
Is .350 Rigby Magnum still in production?
.350 Rigby Magnum is obsolete; typical availability is collector.
What is .350 Rigby Magnum used for?
.350 Rigby Magnum is primarily used for hunting.

Sources & provenance

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

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