Lindcott Armory Pistol · Military
.380/200
British military revolver cartridge for the Enfield No.2 Mk I revolver, essentially a .38 S&W loaded with a 200-grain bullet; standard British sidearm cartridge through World War II..
- Caliber
- 0.361″ · 9.17 mm
- Introduced
- 1927
- Case
- Rimmed
- Parent
- .38 S&W
- Primary use
- Military service
- Status
- Discontinued
- Introduced
- 1927
- Type
- Pistol
- Origin
- United Kingdom
- Inventor
- Various / British military
- Standard
- Military
- Status
- Discontinued
- Availability
- Rare
- Primer
- Small Pistol
- Case type
- Rimmed
- Max pressure
- 14,500 psi
- Eff. range
- 25 yd
Ballistics
- Parent case
- .38 S&W
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| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 9.17 | 0.361 | ✓ |
| Neck ⌀ | 9.79 | 0.385 | ✓ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 9.82 | 0.387 | ✓ |
| Rim ⌀ | 11.18 | 0.440 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.40 | 0.055 | ✓ |
| Neck length | n/a | ||
| Case length | 19.69 | 0.775 | ✓ |
| Overall length | 31.50 | 1.240 | ✓ |
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. .380/200 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 .380/200
1 model in the database chamber .380/200. Browse all →
Lineage
Connected reference
History
Adopted in 1927 for the Enfield No.2 Mk I revolver, the .380/200 used a .38 S&W case with a 200-grain bullet to meet British military specifications. It served throughout World War II alongside the Webley Mk IV revolver also rechambered for this cartridge. Post-war it was replaced by the 9mm Parabellum.
FAQs
- What bullet diameter is .380/200?
- .380/200 uses a 0.361″ (9.17 mm) diameter bullet.
- Is .380/200 still in production?
- .380/200 is discontinued; typical availability is rare.
- What is .380/200 based on?
- .380/200 is derived from the .38 S&W case.
Sources & provenance
- StandardC.I.P. — C.I.P. TDCC — Tables of Dimensions of Cartridges and Chambers
- ReferenceThe Smith & Wesson .38 Special and .38-200 Cartridge · velocity_max_fps
- primaryBritish Military Small Arms Ammo — .380 inch Ball · velocity_max_fps
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →