Rifle · CIP · Not SAAMI standardized · CIP standardizedObsolete
7mm Magnum Flanged H&H
7mm Magnum Flanged H&H is a rimmed bottlenecked rifle cartridge of United Kingdom origin.
- Caliber
- 0.2839″ · 7.21 mm
- Introduced
- 1905
- Case
- Rimmed
- Primary use
- Hunting
- Status
- Discontinued
- Obsolete
- Obsolete
- Introduced
- 1905
- 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
- Discontinued
- Availability
- Rare
- Case capacity
- 62.8 gr H₂O
- Twist (typical)
- 1:8.7
- Primer
- Large Rifle Magnum
- Case type
- Rimmed
- Max pressure
- 47,863 psi, CIP transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 15.7–17.6 ft·lb
Introduced by Holland & Holland
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 7mm Magnum Flanged H&H, 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 ⌀ | 7.21 | 0.284 | ✓ |
| Neck ⌀ | 8.08 | 0.318 | ✓ |
| Shoulder ⌀ | 10.29 | 0.405 | ✓ |
| Shoulder angle | 12.3° | — | ≈ |
| Base ⌀ | 11.68 | 0.460 | ✓ |
| Rim ⌀ | 12.95 | 0.510 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.09 | 0.043 | ✓ |
| Neck length | 8.89 | 0.350 | ≈ |
| Case length | 63.50 | 2.500 | ✓ |
| Overall length | 82.80 | 3.260 | ✓ |
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. 7mm Magnum Flanged H&H 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 Holland & Holland.
FAQs
- What twist rate does 7mm Magnum Flanged H&H use?
- 7mm Magnum Flanged H&H typically uses a 1:8.7 twist rate.
- What bullet diameter is 7mm Magnum Flanged H&H?
- 7mm Magnum Flanged H&H uses a 0.2839″ (7.21 mm) diameter bullet.
- Is 7mm Magnum Flanged H&H still in production?
- 7mm Magnum Flanged H&H is discontinued; typical availability is rare.
- What is 7mm Magnum Flanged H&H used for?
- 7mm Magnum Flanged H&H 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 →
