Rifle · CIP
.264 Leroy Nitro Express
.264 Leroy Nitro Express is a rimless bottlenecked rifle cartridge of Germany origin.
- Caliber
- 0.2638″ · 6.7 mm
- Introduced
- 1905
- Case
- Rimless
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1905
- Type
- Rifle
- Origin
- Germany
- Inventor
- Leroy
- Manufacturer
- Leroy
- Standard
- CIP
- Status
- Active
- Availability
- Limited
- Case capacity
- 57 gr H₂O
- Twist (typical)
- 1:7.9
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 63,817 psi, CIP transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 11.4–13.1 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .264 Leroy Nitro Express, 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
- —
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 ⌀ | 6.70 | 0.264 | ✓ |
| Neck ⌀ | 7.54 | 0.297 | ✓ |
| Shoulder ⌀ | 11.72 | 0.461 | ✓ |
| Shoulder angle | 40° | — | ≈ |
| Base ⌀ | 11.97 | 0.471 | ✓ |
| Rim ⌀ | 12.01 | 0.473 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.37 | 0.054 | ✓ |
| Neck length | 7.75 | 0.305 | ≈ |
| Case length | 51.20 | 2.016 | ✓ |
| Overall length | 65.00 | 2.559 | ✓ |
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. .264 Leroy Nitro Express 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.
Connected reference
History
Developed by Leroy.
FAQs
- What twist rate does .264 Leroy Nitro Express use?
- .264 Leroy Nitro Express typically uses a 1:7.9 twist rate.
- What bullet diameter is .264 Leroy Nitro Express?
- .264 Leroy Nitro Express uses a 0.2638″ (6.7 mm) diameter bullet.
- Is .264 Leroy Nitro Express still in production?
- .264 Leroy Nitro Express is active; typical availability is limited.
- What is .264 Leroy Nitro Express used for?
- .264 Leroy Nitro Express is primarily used for hunting.
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 →
