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Lindcott Armory

Pistol · Obsolete / Non-standard

.455 Webley

Also known as .455 Webley Revolver · .455 Eley · .455 Mk II · 11.6x19.3mmR

The standard British military sidearm cartridge through both World Wars.

Caliber
0.4555″ · 11.57 mm
Introduced
1887
Case
Rimmed
Primary use
Military, Self-Defense
Status
Limited

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VelocityBeing verified
EnergyBeing verified
Typical grains262 gr
Identity
Introduced
1887
Type
Pistol
Origin
United Kingdom
Inventor
Webley & Scott
Manufacturer
Fiocchi / PolyWad
Standard
Obsolete / Non-standard
Status
Limited
Availability
Specialty
Build
Case capacity
25 gr H₂O
Twist (typical)
1:20
Primer
Small Pistol
Case type
Rimmed
Pressure & range
Max pressure
13,000 psi
Eff. range
50 yd
Max range
100 yd
Recoil
2.5–3.5 ft·lb
Subsonic
Capable

Ballistics

Published velocity/energy data isn't available for .455 Webley.

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.

CIP TDCC · approximate
Measuremmin✓
Bullet ⌀ 11.570.456 ✓
Neck ⌀ 12.140.478 ~
Shoulder ⌀ n/a
Shoulder angle n/a
Base ⌀ 12.150.478 ✓
Rim ⌀ 13.500.531 ✓
Belt ⌀ n/a
Rim thickness 0.990.039 ✓
Neck length n/a
Case length 22.500.886 ✓
Overall length 37.081.460 ✓

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. .455 Webley 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 .455 Webley

12 models in the database chamber .455 Webley. Browse all →

RSAF Enfield Webley Mk VIWebley Mk VIWebley Revolver Mark VI .455 Webley 6-inchWebley Mk VI 455 WebleyWebley Webley Mk VI .455 Webley 6-inchWebley & Scott Mk VI .455 Webley 6-inchWebley & Scott Mk VI .455 WebleyWebley & Scott MKVI .455 Webley 6-inchWebley & Scott Mark VI Service Revolver 455 WebleyWebley & Scott Mk VI Revolver .455 WebleyWebley & Scott Webley Mk VI .455 WebleyWebley & Scott Mk VI Revolver .455 WWI

Connected reference

FirearmsFirearms in .455 Webley

History

Adopted in 1887 for the Webley Mk I revolver, the .455 Webley became the defining British military pistol cartridge for 60 years. The Webley top-break revolver in .455 was issued to British and Commonwealth officers through the Boer War, WWI, and WWII. Trench warfare of WWI produced legendary accounts of Webley revolvers continuing to function under the most appalling mud and grime conditions that stoppages would plague semi-automatics. The .455 was officially replaced by the .380/200 (a .38 S&W variant) in 1927 for the new Enfield No. 2 revolver, but Webleys in .455 remained in service through WWII in large numbers. Fiocchi and PolyWad produce modern ammunition for the significant collector community.

FAQs

What twist rate does .455 Webley use?
.455 Webley typically uses a 1:20 twist rate.
What bullet diameter is .455 Webley?
.455 Webley uses a 0.4555″ (11.57 mm) diameter bullet.
Is .455 Webley still in production?
.455 Webley is limited; typical availability is specialty.
What is .455 Webley used for?
.455 Webley is primarily used for military, self-defense.

Sources & provenance

Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 2 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →