Rifle · CIP standardized
.375 Flanged Magnum
Holland & Holland's rimmed version of the .375 H&H, designed for use in double rifles where rimmed cases feed more reliably.
- Introduced
- 1912
- Type
- Rifle
- Origin
- United Kingdom
- Inventor
- Holland & Holland
- Manufacturer
- Holland & Holland
- Standard
- CIP standardized
- Status
- Limited
- Availability
- Limited
- Bullet ⌀
- 0.375″
- Case capacity
- 95 gr H₂O
- Twist
- 1:12
- Primer
- Boxer Large Rifle
- Case type
- Belted
- Max pressure
- 47,137 psi
- Eff. range
- 400 yd
- Recoil
- 25–35 ft·lb
Ballistics
- Velocity
- 2,500–2,650 fps
- Energy
- 3,747–4,202 ft·lb
- By real loads
- 2,400–2,650 fps · 19 loads
- Typical MSRP
- $1.80/rd · price history →
- Parent case
- —
Representative trajectory — modeled from a single velocity input, not a measured load. Real published loads span the "by real loads" range above.
Factory loads
In production — 19 active loads across 9 brands. Top 15 shown · see all 19 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC | $/rd |
|---|---|---|---|---|---|---|---|
| Norma | Bondstrike/Oryx | 270 | Bonded Soft Point | 2,650 | 4,209 | — | $2.75 |
| Kynoch | Big Game / Nitro Express | 270 | Metal Covered Soft Nose | 2,650 | 4,209 | — | $8.00 |
| Nosler | Trophy Grade | 260 | AccuBond | 2,600 | 3,902 | — | $0.85 |
| Barnes | VOR-TX | 270 | TTSX BT | 2,550 | 3,898 | — | $0.85 |
| Woodleigh | Weldcore | 270 | Weldcore SP | 2,550 | 3,898 | — | — |
| RWS | H-Mantel | 270 | H-Mantel | 2,550 | 3,898 | — | $1.80 |
| Federal | Premium Cape-Shok Trophy Bonded | 300 | Trophy Bonded Bear Claw | 2,530 | 4,263 | — | $0.85 |
| Norma | Bondstrike/Oryx | 300 | Woodleigh Solid | 2,500 | 4,163 | — | $2.75 |
| Federal | Trophy Bonded Bear Claw | 300 | Trophy Bonded Bear Claw | 2,500 | 4,163 | — | $0.85 |
| Hornady | DGX Bonded SP | 300 | DGX Bonded SP | 2,500 | 4,163 | — | $0.85 |
| Hornady | DGS FMJ Solid | 300 | FMJ Solid | 2,500 | 4,163 | — | $0.85 |
| A-Square | Dead Tough SP | 300 | Dead Tough SP | 2,500 | 4,163 | — | — |
| Kynoch | SP Soft Nose | 300 | Soft Nose | 2,500 | 4,163 | — | $8.00 |
| Kynoch | FMJ Solid | 300 | FMJ Solid | 2,500 | 4,163 | — | $8.00 |
| Kynoch | Big Game / Nitro Express | 300 | Metal Covered Solid | 2,500 | 4,163 | — | $8.00 |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
Dimensions

Reloading cost
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
Holland & Holland introduced the flanged (rimmed) version of their .375 Magnum in the early 1900s for use in double rifles, where rimmed cases improve reliable extraction. Offers ballistics similar to the rimless .375 H&H but intended for break-action and double-barrel rifles favored by dangerous game hunters.
FAQs
- What twist rate does .375 Flanged Magnum use?
- .375 Flanged Magnum typically uses a 1:12 twist rate.
- What bullet diameter is .375 Flanged Magnum?
- .375 Flanged Magnum uses a 0.375″ (9.53 mm) diameter bullet.
- Is .375 Flanged Magnum still in production?
- .375 Flanged Magnum is limited; typical availability is limited.
- What is .375 Flanged Magnum used for?
- .375 Flanged Magnum is primarily used for hunting.
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 19 live factory loads; the trajectory is modeled (point-mass), not measured. Spotted an error? Report it →
Lindcott Armory