Rifle · SAAMI
.32 Winchester Special
Lever-action hunting cartridge developed as a slightly larger-bore companion to .30-30 Winchester.
- Caliber
- 0.322″ · 8.179 mm
- Introduced
- 1899
- Case
- Rimmed
- Parent
- .38-55 Winchester
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1899
- Type
- Rifle
- Origin
- United States
- Inventor
- Winchester
- Manufacturer
- Winchester Repeating Arms
- Standard
- SAAMI
- Status
- Active
- Availability
- Moderate
- Case capacity
- 38 gr H₂O
- Twist (typical)
- 1:16
- Primer
- Large Rifle
- Case type
- Rimmed
- Max pressure
- 42,000 psi
- Eff. range
- 200 yd
- Max range
- 600 yd
- Recoil
- 8–12 ft·lb
Introduced by Winchester Repeating Arms
Ballistics
Published velocity/energy data isn't available for .32 Winchester Special. Parent case: .38-55 Winchester.
Performance
Dimensionscase measurements · scale drawing · size vs familiar rounds
Case dimensions — the scale drawing at the top of the page is built from these.
SAAMI · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 8.18 | 0.322 | ✓ |
| Neck ⌀ | 8.71 | 0.343 | ✓ |
| Shoulder ⌀ | 10.20 | 0.401 | ✓ |
| Shoulder angle | 14.5° | — | ✓ |
| Base ⌀ | 10.72 | 0.422 | ✓ |
| Rim ⌀ | 12.85 | 0.506 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.60 | 0.063 | ✓ |
| Neck length | 12.35 | 0.486 | ≈ |
| Case length | 51.82 | 2.040 | ✓ |
| Overall length | 65.15 | 2.565 | ✓ |
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 Special is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
Suitable powders
1 reloading powder listed for .32 Winchester Special, fastest to slowest. Cross-reference in the finder →
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.
Firearms chambered in .32 Winchester Special
11 models in the database chamber .32 Winchester Special. Browse all →
Lineage
Connected reference
History
Winchester introduced the .32 Special in 1899 specifically for the Model 94 lever action. The slightly larger bore (compared to .30-30) was marketed as being more suitable for cast lead bullets — allowing hunters to reload with simple equipment. Modern ballistics show minimal performance difference from .30-30 with factory ammunition. Still produced by major manufacturers and chambered in the Winchester Model 94 and some Marlin lever guns.
FAQs
- What twist rate does .32 Winchester Special use?
- .32 Winchester Special typically uses a 1:16 twist rate.
- What bullet diameter is .32 Winchester Special?
- .32 Winchester Special uses a 0.322″ (8.179 mm) diameter bullet.
- Is .32 Winchester Special still in production?
- .32 Winchester Special is active; typical availability is moderate.
- What is .32 Winchester Special used for?
- .32 Winchester Special is primarily used for hunting.
- What is .32 Winchester Special based on?
- .32 Winchester Special is derived from the .38-55 Winchester case.
- What are the best powders for .32 Winchester Special?
- Reloading powders commonly listed for .32 Winchester Special include IMR 3031.
Sources & provenance
- Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
- Standard SAAMI — ANSI/SAAMI Z299.4-2025 — Centerfire Rifle Velocity & Pressure Data · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 32 Win Special 165 gr FTX LEVERevolution (item #82732) · grain_ballistics, representative_gun
- Manufacturer Hornady — Hornady 2022 Standard Ballistics Chart (PDF) · grain_ballistics, representative_gun
- Manufacturer Hornady — 32 Cal .321 165 gr FTX bullet (item #32005) · grain_ballistics, representative_gun
- Manufacturer Federal — Power-Shok Rifle 32 Win Special 170 Grain (32A) · grain_ballistics, representative_gun archived
- Manufacturer Remington — Core-Lokt 32 Win Special 170 Grain (21489) · grain_ballistics, representative_gun archived
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 22 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →