Rifle · CIP · Not SAAMI standardized · CIP standardizedObsolete
.32 Winchester Self-Loading
A semi-rimmed .32 caliber cartridge introduced by Winchester in 1906 for its Model 1905 self-loading rifle, firing a 165 gr bullet at about 1,390 fps.
- Caliber
- 0.321″ · 8.15 mm
- Introduced
- 1906
- Case
- Semi-Rimmed
- Primary use
- Hunting
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1906
- Type
- Rifle
- Origin
- United States
- Inventor
- Winchester Repeating Arms Company
- Manufacturer
- Winchester Repeating Arms
- Standard
- CIP · Not SAAMI standardized · CIP standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 22.9 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Large Rifle
- Case type
- Semi-Rimmed
- Max pressure
- 22,481 psi, CIP transducer
- Eff. range
- 125 yd
- Max range
- 3450 yd
- Recoil
- 3.7 ft·lb
Introduced by Winchester Repeating Arms
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .32 Winchester Self-Loading, 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.
mixed/other · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 8.15 | 0.321 | ✓ |
| Neck ⌀ | 8.81 | 0.347 | |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 8.93 | 0.352 | |
| Rim ⌀ | 9.91 | 0.390 | |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | |
| Neck length | n/a | ||
| Case length | 32.77 | 1.290 | ~ |
| Overall length | 47.75 | 1.880 | |
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. .32 Winchester Self-Loading is highlighted below.
Missing a dimension for .32 Winchester Self-Loading? 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 .32 Winchester Self-Loading was introduced in 1906 by Winchester Repeating Arms Company.
FAQs
- What twist rate does .32 Winchester Self-Loading use?
- .32 Winchester Self-Loading typically uses a 1:10 twist rate.
- What bullet diameter is .32 Winchester Self-Loading?
- .32 Winchester Self-Loading uses a 0.321″ (8.15 mm) diameter bullet.
- Is .32 Winchester Self-Loading still in production?
- .32 Winchester Self-Loading is obsolete; typical availability is collector.
- What is .32 Winchester Self-Loading used for?
- .32 Winchester Self-Loading is primarily used for hunting.
Sources & provenance
- Reference Gun Digest / Krause (F+W Media) — Cartridges of the World — .32 Winchester Self-Loading · velocity, grain weights, bullet ⌀
- Secondary GunMart (gunmart.net) — Case Histories: .32 Winchester SL · grain weights, year, bullet ⌀, velocity 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 →
