Wildcat · Wildcat
.35 Brown-Whelen
Improved .35 Whelen wildcat with geometry distinct from the Ackley Improved version..
- Caliber
- 0.358″ · 9.093 mm
- Introduced
- 1955
- Case
- Rimless
- Parent
- .35 Whelen
- Primary use
- Hunting
- Status
- Wildcat
- Introduced
- 1955
- Type
- Wildcat
- Origin
- United States
- Inventor
- Norman Brown (with P.O. Ackley)
- Standard
- Wildcat
- Status
- Wildcat
- Availability
- Handload Only
- Primer
- Large Rifle
- Case type
- Rimless
- Eff. range
- 300 yd
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .35 Brown-Whelen, 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
- .35 Whelen
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 ⌀ | 9.09 | 0.358 | ~ |
| Neck ⌀ | 9.78 | 0.385 | ~ |
| Shoulder ⌀ | 11.71 | 0.461 | ~ |
| Shoulder angle | 40° | — | ~ |
| Base ⌀ | 11.99 | 0.472 | ~ |
| Rim ⌀ | 12.01 | 0.473 | ~ |
| 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. .35 Brown-Whelen is highlighted below.
Missing a dimension for .35 Brown-Whelen? 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
Norman Brown (with P.O. Ackley), documented in a 1956 Gun Digest article; shoulder moved forward, distinct from the .35 Whelen Ackley Improved.
FAQs
- What bullet diameter is .35 Brown-Whelen?
- .35 Brown-Whelen uses a 0.358″ (9.093 mm) diameter bullet.
- Is .35 Brown-Whelen still in production?
- .35 Brown-Whelen is wildcat; typical availability is handload only.
- What is .35 Brown-Whelen used for?
- .35 Brown-Whelen is primarily used for hunting.
- What is .35 Brown-Whelen based on?
- .35 Brown-Whelen is derived from the .35 Whelen case.
Sources & provenance
- Standard SAAMI (Sporting Arms and Ammunition Manufacturers' Institute) — ANSI/SAAMI Z299.4 – 2015 (Centerfire Rifle) — Velocity & Pressure / Cartridge & Chamber Drawings · bullet ⌀ archived
- Reference Wolfe Publishing (P.O. Ackley) — Handbook for Shooters and Reloaders, Vol. I — P.O. Ackley (documents the .35 Whelen Improved family) · velocity, grain weights, year
- Secondary CartridgeCollector.net — 35 Brown-Whelen · 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 →