Rifle · Experimental
.224 Springfield
Springfield Armory experimental SCHV cartridge and the key predecessor to the .222 Remington Magnum..
- Caliber
- 0.224″ · 5.69 mm
- Introduced
- 1957
- Case
- Rimless
- Parent
- .222 Remington
- Primary use
- Experimental, Military development
- Status
- Obsolete
- Introduced
- 1957
- Type
- Rifle
- Origin
- United States
- Inventor
- Earle Harvey / Springfield Armory
- Manufacturer
- Springfield Armory (U.S. Arsenal)
- Standard
- Experimental
- Status
- Obsolete
- Availability
- Collector
- Primer
- Small Rifle
- Case type
- Rimless
- Eff. range
- 500 yd
Introduced by Springfield Armory (U.S. Arsenal)
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .224 Springfield, 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
- .222 Remington
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 · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 5.69 | 0.224 | ~ |
| Neck ⌀ | 6.43 | 0.253 | ✓ |
| Shoulder ⌀ | 9.07 | 0.357 | ✓ |
| Shoulder angle | 23° | — | ✓ |
| Base ⌀ | 9.56 | 0.376 | ✓ |
| Rim ⌀ | 9.60 | 0.378 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | ✓ |
| Neck length | 6.70 | 0.264 | ≈ |
| Case length | 46.99 | 1.850 | ✓ |
| Overall length | 57.91 | 2.280 | ✓ |
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. .224 Springfield 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.
Lineage
Connected reference
History
Developed 1957 during U.S. SCHV trials; commercialized by Remington as the .222 Remington Magnum in 1958.
FAQs
- What bullet diameter is .224 Springfield?
- .224 Springfield uses a 0.224″ (5.69 mm) diameter bullet.
- Is .224 Springfield still in production?
- .224 Springfield is obsolete; typical availability is collector.
- What is .224 Springfield used for?
- .224 Springfield is primarily used for experimental, military development.
- What is .224 Springfield based on?
- .224 Springfield is derived from the .222 Remington case.
Sources & provenance
- Standard SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) — ANSI/SAAMI Z299.4 – 2015 (Centerfire Rifle) — Velocity & Pressure / Cartridge & Chamber Drawings · bullet ⌀, velocity archived
- Secondary Historical Firearms — The Springfield SCHV Infantry Rifle in 1957 · year, grain weights, bullet ⌀ archived
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →