Rifle · Not SAAMI standardized · Not standardizedObsolete
.25 Stevens
Rimfire single-shot rifle cartridge chambered in Stevens tipping-barrel and falling-block rifles.
- Caliber
- 0.251″ · 6.375 mm
- Introduced
- 1898
- Case
- Rimfire
- Primary use
- Small Game, Target
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1898
- Type
- Rifle
- Origin
- United States
- Inventor
- Stevens Arms
- Manufacturer
- Stevens Arms
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Discontinued
- Availability
- Collector
- Case capacity
- 13 gr H₂O
- Twist (typical)
- 1:14
- Primer
- Rimfire
- Case type
- Rimfire
- Max pressure
- 18,000 CUP, SAAMI crusher
- Eff. range
- 100 yd
- Max range
- 2600 yd
- Recoil
- 0.3–0.8 ft·lb
- Subsonic
- Capable
Introduced by Stevens Arms
Ballistics
Published velocity/energy data isn't available for .25 Stevens — an obsolete/collector cartridge.
Performance
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 6.38 | 0.251 | ✓ |
| Neck ⌀ | 7.01 | 0.276 | ✓ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 7.01 | 0.276 | ✓ |
| Rim ⌀ | 8.46 | 0.333 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.31 | 0.052 | |
| Neck length | n/a | ||
| Case length | 28.58 | 1.125 | ✓ |
| Overall length | 35.43 | 1.395 | ✓ |
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. .25 Stevens is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
History
Developed by J. Stevens Arms & Tool Co. in the late 19th century for their gallery and sporting single-shot rifles. Factory ammunition was produced until the mid-20th century. Today ammunition is unavailable commercially; collector interest centers on the Stevens rifles.
FAQs
- What twist rate does .25 Stevens use?
- .25 Stevens typically uses a 1:14 twist rate.
- What bullet diameter is .25 Stevens?
- .25 Stevens uses a 0.251″ (6.375 mm) diameter bullet.
- Is .25 Stevens still in production?
- .25 Stevens is discontinued; typical availability is collector.
- What is .25 Stevens used for?
- .25 Stevens is primarily used for small game, target.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 3 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
