Wildcat · Wildcat · Not standardizedObsolete
.375 Chatfield-Taylor
The .375 Chatfield-Taylor is an extreme .375-caliber wildcat cartridge formed from the massive .460 Weatherby Magnum case, delivering .375-caliber bullets at velocities significantly exceeding the .375 H&H Magnum and approaching the .378 Weatherby Magnum in energy.
- Caliber
- 0.375″ · 9.525 mm
- Introduced
- 1989
- Case
- Belted
- Parent
- .338 Winchester Magnum
- Primary use
- hunting_dangerous_game, hunting_large_game
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1989
- Type
- Wildcat
- Origin
- United States
- Inventor
- Elgin Gates, Chatfield-Taylor
- Manufacturer
- Wildcatters
- Standard
- Wildcat · Not standardized
- SAAMI
- Wildcat
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Handload Only
- Case capacity
- 87 gr H₂O
- Twist (typical)
- 1:12
- Primer
- Large Rifle Magnum
- Case type
- Belted
- Max pressure
- 64,000 psi, SAAMI transducer
- Eff. range
- 300 yd
- Max range
- 5150 yd
- Recoil
- 64.7–100.5 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .375 Chatfield-Taylor, 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
- .338 Winchester Magnum
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.
SAAMI · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 9.53 | 0.375 | · |
| Neck ⌀ | 10.21 | 0.402 | ~ |
| Shoulder ⌀ | 12.47 | 0.491 | ~ |
| Shoulder angle | 25° | — | |
| Base ⌀ | 13.03 | 0.513 | · |
| Rim ⌀ | 13.51 | 0.532 | · |
| Belt ⌀ | 13.51 | 0.532 | ~ |
| Rim thickness | 1.27 | 0.050 | · |
| Neck length | 9.83 | 0.387 | |
| Case length | 63.50 | 2.500 | · |
| Overall length | 91.44 | 3.600 | · |
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. .375 Chatfield-Taylor is highlighted below.
Missing a dimension for .375 Chatfield-Taylor? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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
Connected reference
History
The cartridge emerged from the tradition of wildcatting the Weatherby magnum case family to produce maximum-performance cartridges in various calibers. The .460 Weatherby Magnum parent case provides enormous capacity, enabling velocities previously impossible in .375-caliber factory cartridges. As a wildcat, it requires custom reamer-cut chambers and handloaded ammunition. It has never achieved commercial standardization and remains a small-community cartridge among serious dangerous game hunters.
FAQs
- What twist rate does .375 Chatfield-Taylor use?
- .375 Chatfield-Taylor typically uses a 1:12 twist rate.
- What bullet diameter is .375 Chatfield-Taylor?
- .375 Chatfield-Taylor uses a 0.375″ (9.525 mm) diameter bullet.
- Is .375 Chatfield-Taylor still in production?
- .375 Chatfield-Taylor is obsolete; typical availability is handload only.
- What is .375 Chatfield-Taylor used for?
- .375 Chatfield-Taylor is primarily used for hunting_dangerous_game, hunting_large_game.
- What is .375 Chatfield-Taylor based on?
- .375 Chatfield-Taylor is derived from the .338 Winchester Magnum case.
Sources & provenance
- Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
- Secondary 375 Taylor — Shooters Forum · parent_cartridge
- Secondary .375/338 Chatfield/Taylor Brass Case Trimmer — Little Crow Gunworks · parent_cartridge
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
