Wildcat · Wildcat
.375-06
Large-bore .30-06 wildcat sometimes called the .375 Whelen..
- Caliber
- 0.375″ · 9.525 mm
- Introduced
- 1951
- Case
- Rimless
- Parent
- .30-06 Springfield
- Primary use
- Hunting
- Status
- Wildcat
- Introduced
- 1951
- Type
- Wildcat
- Origin
- United States
- Inventor
- L.R. "Bob" Wallack (attrib.)
- Standard
- Wildcat
- Status
- Wildcat
- Availability
- Handload Only
- Primer
- Large Rifle
- Case type
- Rimless
- Eff. range
- 250 yd
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .375-06, 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
- .30-06 Springfield
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 ⌀ | 11.24 | 0.443 | ~ |
| Shoulder angle | 17.5° | — | ~ |
| Base ⌀ | 11.96 | 0.471 | ~ |
| Rim ⌀ | 12.04 | 0.474 | ~ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.24 | 0.049 | ~ |
| Neck length | — | — | |
| Case length | 63.35 | 2.494 | ~ |
| Overall length | — | — | |
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. .375-06 is highlighted below.
Missing a dimension for .375-06? 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
Commonly attributed to Bob Wallack ~1951 (disputed; often grouped with the 1920s Whelen wildcat family). Completes the .30-06 tree at its upper bore sizes.
FAQs
- What bullet diameter is .375-06?
- .375-06 uses a 0.375″ (9.525 mm) diameter bullet.
- Is .375-06 still in production?
- .375-06 is wildcat; typical availability is handload only.
- What is .375-06 used for?
- .375-06 is primarily used for hunting.
- What is .375-06 based on?
- .375-06 is derived from the .30-06 Springfield case.
Sources & provenance
- Reference Wolfe Publishing (P.O. Ackley) — Handbook for Shooters and Reloaders — P.O. Ackley (.375 Whelen / .375-06 wildcat) · bullet ⌀, velocity, grain weights, year
- Secondary Wikipedia (pointer) — .30-06 Springfield wildcat cartridges · bullet ⌀ archived
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →