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Rifle · SAAMI

.405 Winchester

Also known as .405 Win

Theodore Roosevelt's African safari cartridge.

Caliber
0.4115″ · 10.452 mm
Introduced
1904
Case
Rimmed
Primary use
Big Game, Dangerous Game
Status
Active

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VelocityBeing verified
EnergyBeing verified
Typical grains300 · 400 gr
Identity
Introduced
1904
Type
Rifle
Origin
United States
Inventor
Winchester
Manufacturer
Winchester Repeating Arms
Standard
SAAMI
Status
Active
Availability
Common
Build
Case capacity
78 gr H₂O
Twist (typical)
1:14
Primer
Large Rifle
Case type
Rimmed
Pressure & range
Max pressure
46,000 psi, SAAMI transducer
Eff. range
200 yd
Max range
3250 yd
Recoil
34.1–43.9 ft·lb

Introduced by Winchester Repeating Arms

Ballistics

Published velocity/energy data isn't available for .405 Winchester.

Performance

Best for Withheld until verified
Best for Withheld until verified
Dimensionscase measurements · scale drawing · size vs familiar rounds

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

SAAMI · verified
Measuremmin✓
Bullet ⌀ 10.450.411 ✓
Neck ⌀ 11.070.436 ✓
Shoulder ⌀ n/a
Shoulder angle n/a
Base ⌀ 11.710.461 ✓
Rim ⌀ 13.790.543 ✓
Belt ⌀ n/a
Rim thickness 1.910.075 ~
Neck length n/a
Case length 65.612.583 ✓
Overall length 80.653.175 ✓

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. .405 Winchester is highlighted below.

Factory loads

Verification

Being verified

Advertised FPS, energy, and BC are withheld until loads clear verification.

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 .405 Winchester

Winchester Repeating Arms Model 1895 .30-06 Sprg 24-inchWinchester Repeating Arms Model 1895 .405 Win 24-inchWinchester Repeating Arms 1895 Carbine 405 WinRuger No. 1 .458 Lott 24-inchRuger No.1 .45-70 Govt 22-inchRuger No.1 Tropical .375 H&H 24-inchRuger No. 1Winchester Model 1895Winchester Repeating Arms Model 1895 .30-06 SprgRuger No.1 .405 Win 24-inchRuger No.1 Sporter .405 Win 26-inchWinchester Model 1895 Safari Express

History

Introduced by Winchester in 1904 for the Model 1895 box magazine lever action. Roosevelt used it exclusively on his 1909 African safari, killing lion, elephant, rhino, hippo, and water buffalo. His writings about the cartridge made it internationally famous. Declined after the 1920s as bolt-action magnums offered better options.

FAQs

What twist rate does .405 Winchester use?
.405 Winchester typically uses a 1:14 twist rate.
What bullet diameter is .405 Winchester?
.405 Winchester uses a 0.4115″ (10.452 mm) diameter bullet.
Is .405 Winchester still in production?
.405 Winchester is active; typical availability is common.
What is .405 Winchester used for?
.405 Winchester is primarily used for big game, dangerous game.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 18 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →

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