Lindcott Armory Revolver · Obsolete
.455 Webley Mk II
Webley's semi-automatic pistol cartridge for the Webley Self-Loading Pistol adopted by the Royal Flying Corps.
- Introduced
- 1912
- Type
- Revolver
- Origin
- United Kingdom
- Inventor
- Webley & Scott
- Manufacturer
- Webley
- Standard
- Obsolete
- Status
- Discontinued
- Availability
- Collector
- Bullet ⌀
- 0.454″
- Case length
- 0.886″
- Overall length
- 1.46″
- Base ⌀
- 0.478″
- Rim ⌀
- 0.53″
- Case capacity
- 25 gr H₂O
- Twist
- 1:20
- Primer
- Boxer Small Pistol
- Case type
- Rimmed
- Max pressure
- 13,000 psi
- Eff. range
- 50 yd
- Recoil
- 2.5–3.5 ft·lb
- Subsonic
- Capable
Ballistics
- Velocity
- 600–650 fps
- Energy
- 212–249 ft·lb
- Typical MSRP
- $0.85/rd · price history →
- Parent case
- —
Representative trajectory — modeled from a single velocity input, not a measured load.
Factory loads
In production — 5 active loads across 4 brands. Top 15 shown · see all 20 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC | $/rd |
|---|---|---|---|---|---|---|---|
| Buffalo Arms | Lead RN Reproduction | 265 | Lead RN | 600 | 212 | — | — |
| Remington | Standard | 262 | LRN | 600 | 209 | — | $0.85 |
| Fiocchi | Standard | 262 | LRN | 600 | 209 | — | $0.85 |
| Sellier & Bellot | Lead RN | 265 | Lead RN | 600 | 212 | — | $0.85 |
| Fiocchi | Lead RN | 265 | Lead RN | 600 | 212 | — | $0.85 |
| Bertram | Bertram Reloads | 265 | Lead RN | 700 | 288 | — | — |
| Graf & Sons | Graf Heritage | 265 | Lead RN | 700 | 288 | — | — |
| Imperial Chemical Industries | Lead RN WWII | 265 | Lead RN | 600 | 212 | — | — |
| Norma | Africa PH | 265 | Lead Round Nose | 600 | 212 | — | — |
| Eley | Lead RN Service | 265 | Lead RN | 600 | 212 | — | — |
| Graf | FMJ Standard | 265 | Lead Round Nose | 600 | 212 | — | — |
| Buffalo Arms | Custom SP | 265 | Lead Round Nose | 600 | 212 | — | — |
| RWS | Classic | 265 | Lead Round Nose | 600 | 212 | — | — |
| Bertram | Custom | 265 | Lead Round Nose | 600 | 212 | — | — |
| Winchester | Standard | 262 | LRN | 600 | 209 | — | $0.85 |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Dimensions
Reloading cost
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
Webley developed these semi-automatic pistol cartridges for British military trials during WWI. The .455 Webley Self-Loading Pistol was adopted by the Royal Navy and Royal Flying Corps. The cartridge's semi-rimless design improved feeding reliability in semi-automatic actions compared to the rimmed .455 Webley revolver round.
FAQs
- What twist rate does .455 Webley Mk II use?
- .455 Webley Mk II typically uses a 1:20 twist rate.
- What bullet diameter is .455 Webley Mk II?
- .455 Webley Mk II uses a 0.454″ (11.5316 mm) diameter bullet.
- Is .455 Webley Mk II still in production?
- .455 Webley Mk II is discontinued; typical availability is collector.
- What is .455 Webley Mk II used for?
- .455 Webley Mk II is primarily used for self-defense.
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 5 live factory loads; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →