Rifle · Not SAAMI standardized · Not standardizedObsolete
.22 Spitfire (5.7mm Johnson)
.22 Spitfire (5.7mm Johnson) is a rimless bottlenecked rifle cartridge of United States origin.
- Caliber
- 0.224″ · 5.69 mm
- Introduced
- 1963
- Case
- Rimless
- Parent
- .30 Carbine
- Primary use
- Hunting
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1963
- Type
- Rifle
- Origin
- United States
- Inventor
- Melvin M. Johnson
- Manufacturer
- Johnson Guns Inc.
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Rare
- Case capacity
- 17.4 gr H₂O
- Twist (typical)
- 1:14.0
- Primer
- Boxer Small Rifle
- Case type
- Rimless
- Max pressure
- 40,000 psi, SAAMI transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 1.3–1.5 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .22 Spitfire (5.7mm Johnson), 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
- .30 Carbine
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.
Wikipedia · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 5.69 | 0.224 | · |
| Neck ⌀ | 6.43 | 0.253 | · |
| Shoulder ⌀ | 8.43 | 0.332 | · |
| Shoulder angle | 43.3° | — | |
| Base ⌀ | 8.97 | 0.353 | · |
| Rim ⌀ | 9.04 | 0.356 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | |
| Neck length | 5.88 | 0.231 | |
| Case length | 32.77 | 1.290 | · |
| Overall length | 41.91 | 1.650 | · |
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. .22 Spitfire (5.7mm Johnson) is highlighted below.
Missing a dimension for .22 Spitfire (5.7mm Johnson)? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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.
Lineage
Connected reference
History
Introduced around 1963 by Melvin M. Johnson, derived from the .30 Carbine.
FAQs
- What twist rate does .22 Spitfire (5.7mm Johnson) use?
- .22 Spitfire (5.7mm Johnson) typically uses a 1:14.0 twist rate.
- What bullet diameter is .22 Spitfire (5.7mm Johnson)?
- .22 Spitfire (5.7mm Johnson) uses a 0.224″ (5.69 mm) diameter bullet.
- Is .22 Spitfire (5.7mm Johnson) still in production?
- .22 Spitfire (5.7mm Johnson) is discontinued; typical availability is rare.
- What is .22 Spitfire (5.7mm Johnson) used for?
- .22 Spitfire (5.7mm Johnson) is primarily used for hunting.
- What is .22 Spitfire (5.7mm Johnson) based on?
- .22 Spitfire (5.7mm Johnson) is derived from the .30 Carbine case.
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 →
