Rifle · CIP · Not SAAMI standardized · CIP standardizedObsolete
.275 Belted Nitro Express (.275 H&H Magnum)
.275 Belted Nitro Express (.275 H&H Magnum) is a belted bottlenecked rifle cartridge of United Kingdom origin.
- Caliber
- 0.287″ · 7.29 mm
- Introduced
- 1912
- Case
- Belted
- Primary use
- Hunting
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1912
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- Holland & Holland
- Manufacturer
- Holland & Holland
- Standard
- CIP · Not SAAMI standardized · CIP standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 77.4 gr H₂O
- Twist (typical)
- 1:10.0
- Primer
- Large Rifle Magnum
- Case type
- Belted
- Max pressure
- 60,191 psi, CIP transducer
- Eff. range
- 300 yd
- Max range
- 1500 yd
- Recoil
- 18.9–19.1 ft·lb
Introduced by Holland & Holland
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .275 Belted Nitro Express (.275 H&H Magnum), 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 ⌀ | 7.29 | 0.287 | ✓ |
| Neck ⌀ | 8.25 | 0.325 | ✓ |
| Shoulder ⌀ | 11.43 | 0.450 | ✓ |
| Shoulder angle | 32° | — | ≈ |
| Base ⌀ | 13.03 | 0.513 | ✓ |
| Rim ⌀ | 13.51 | 0.532 | ✓ |
| Belt ⌀ | 13.56 | 0.534 | ✓ |
| Rim thickness | 1.27 | 0.050 | ✓ |
| Neck length | 7.62 | 0.300 | ≈ |
| Case length | 63.50 | 2.500 | ✓ |
| Overall length | 87.12 | 3.430 | ✓ |
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. .275 Belted Nitro Express (.275 H&H Magnum) 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.
Firearms chambered in .275 Belted Nitro Express (.275 H&H Magnum)
Connected reference
History
Introduced around 1912 by Holland & Holland.
FAQs
- What twist rate does .275 Belted Nitro Express (.275 H&H Magnum) use?
- .275 Belted Nitro Express (.275 H&H Magnum) typically uses a 1:10.0 twist rate.
- What bullet diameter is .275 Belted Nitro Express (.275 H&H Magnum)?
- .275 Belted Nitro Express (.275 H&H Magnum) uses a 0.287″ (7.29 mm) diameter bullet.
- Is .275 Belted Nitro Express (.275 H&H Magnum) still in production?
- .275 Belted Nitro Express (.275 H&H Magnum) is obsolete; typical availability is collector.
- What is .275 Belted Nitro Express (.275 H&H Magnum) used for?
- .275 Belted Nitro Express (.275 H&H Magnum) 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 →
