Rifle · Wildcat
.25 Creedmoor
The 6.5 Creedmoor case necked to .257 — running lighter, higher-BC .25 caliber bullets at higher velocities than the parent.
- Caliber
- 0.2571″ · 6.53 mm
- Introduced
- 2025
- Case
- Rimless
- Parent
- 6.5 Creedmoor
- Primary use
- hunting, target
- Status
- Active
- Introduced
- 2025
- Type
- Rifle
- Origin
- United States
- Inventor
- Hornady
- Manufacturer
- Hornady
- Standard
- Wildcat
- Status
- Active
- Availability
- Limited
- Case capacity
- 52.5 gr H₂O
- Twist (typical)
- 1:8
- Primer
- Small Rifle
- Case type
- Rimless
- Max pressure
- 62,000 psi, SAAMI transducer
- Eff. range
- 600 yd
- Max range
- 5600 yd
- Recoil
- 9–13 ft·lb
Introduced by Hornady
Ballistics
Published velocity/energy data isn't available for .25 Creedmoor. Parent case: 6.5 Creedmoor.
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 ⌀ | 6.53 | 0.257 | ✓ |
| Neck ⌀ | 7.32 | 0.288 | ✓ |
| Shoulder ⌀ | 11.73 | 0.462 | ✓ |
| Shoulder angle | 30° | — | ✓ |
| Base ⌀ | 11.95 | 0.470 | ✓ |
| Rim ⌀ | 11.99 | 0.472 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | ✓ |
| Neck length | 7.09 | 0.279 | ≈ |
| Case length | 48.77 | 1.920 | ✓ |
| Overall length | 71.76 | 2.825 | ✓ |
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 Creedmoor is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
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
History
First developed by individual shooters around 2015–2016, the .25 Creedmoor gained rapid traction as hunters recognized the combination of 6.5 Creedmoor brass availability with high-BC .257 bullets like the 131-grain Berger Hybrid. Several custom barrel makers began chambering rifles in 2017–2018, and Hornady published load data by 2019. SAAMI accepted it for standardization in January 2025 (Hornady; 134 gr at 2,810 fps, MAP 62,000 psi).
FAQs
- What twist rate does .25 Creedmoor use?
- .25 Creedmoor typically uses a 1:8 twist rate.
- What bullet diameter is .25 Creedmoor?
- .25 Creedmoor uses a 0.2571″ (6.53 mm) diameter bullet.
- Is .25 Creedmoor still in production?
- .25 Creedmoor is active; typical availability is limited.
- What is .25 Creedmoor used for?
- .25 Creedmoor is primarily used for hunting, target.
- What is .25 Creedmoor based on?
- .25 Creedmoor is derived from the 6.5 Creedmoor case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 20 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
