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
- 45 gr H₂O
- Twist (typical)
- 1:16
- Primer
- Large Rifle
- Case type
- Rimmed
- Max pressure
- 42,000 psi, SAAMI transducer
- Eff. range
- 200 yd
- Max range
- 3050 yd
- Recoil
- 12–14.5 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
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 Z299.4-2025 — Centerfire Rifle Velocity & Pressure Data · grain_ballistics, representative_gun archived
- Standard SAAMI — ANSI/SAAMI Z299 — Cartridge & Chamber Drawings archived
- Manufacturer Federal — Power-Shok Rifle 32 Win Special 170 Grain (32A) · grain_ballistics, representative_gun archived
- Manufacturer Hornady — 32 Cal .321 165 gr FTX bullet (item #32005) · grain_ballistics, representative_gun
- Manufacturer Remington — Core-Lokt 32 Win Special 170 Grain (21489) · grain_ballistics, representative_gun archived
- Manufacturer Hornady — Hornady 2022 Standard Ballistics Chart (PDF) · representative_gun, grain_ballistics
- Manufacturer Hornady — 32 Win Special 165 gr FTX LEVERevolution (item #82732) · grain_ballistics, representative_gun
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 23 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
