Lindcott Armory Pistol · SAAMI
9mm Winchester Magnum
High-pressure semi-auto pistol magnum delivering 9mm bullets at .357 Magnum velocities.
- Caliber
- 0.355″ · 9.017 mm
- Introduced
- 1977
- Case
- Rimless
- Parent
- 9mm Luger
- Primary use
- Hunting, Self Defense
- Status
- Discontinued
- Introduced
- 1977
- Type
- Pistol
- Origin
- United States
- Inventor
- Winchester
- Manufacturer
- Winchester
- Standard
- SAAMI
- Status
- Discontinued
- Availability
- Collector
- Case capacity
- 20.5 gr H₂O
- Twist (typical)
- 1:10
- Primer
- Small Pistol
- Case type
- Rimless
- Max pressure
- 45,000 psi
- Eff. range
- 100 yd
- Max range
- 150 yd
- Recoil
- 3.5–5.5 ft·lb
- Subsonic
- Capable
Ballistics
- By real loads
- 1,475–1,500 fps · 15 loads
- Parent case
- 9mm Luger
Representative trajectory — modeled from a single velocity input (no published BC for this cartridge yet).
Performance
Buy links open 9mm Winchester Magnum ammunition at Rivertown Munitions.
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 ⌀ | 9.02 | 0.355 | ✓ |
| Neck ⌀ | 9.63 | 0.379 | ✓ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 9.93 | 0.391 | ✓ |
| Rim ⌀ | 10.01 | 0.394 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.27 | 0.050 | ✓ |
| Neck length | n/a | ||
| Case length | 29.46 | 1.160 | ✓ |
| Overall length | 40.01 | 1.575 | ✓ |
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. 9mm Winchester Magnum is highlighted below.
Factory loads
In production — 15 active loads across 15 brands. Top 15 shown · see all 19 →.
| Brand | Load | Grain | Bullet | FPS | ft·lb | BC |
|---|---|---|---|---|---|---|
| DoubleTap | Defense | 115 | JHP | 1,500 | 574 | — |
| Cor-Bon | JHP | 115 | JHP | 1,475 | 555 | — |
| Armscor | Standard | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| PPU | Standard | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| Winchester | Supreme | 115 | JHP | 1,475 | 555 | — |
| Norma | Classic | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| RWS | Classic | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| Sellier & Bellot | SP | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| Remington | HTP | 115 | JHP | 1,475 | 555 | — |
| Buffalo Arms | Custom | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| Hornady | Custom | 115 | XTP | 1,475 | 555 | — |
| Speer | Gold Dot | 115 | Gold Dot HP | 1,475 | 555 | — |
| Federal | Premium | 115 | JHP | 1,475 | 555 | — |
| Kynoch | Classic | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
| Wolf | FMJ | 125 | Jacketed Hollow Point | 1,475 | 604 | — |
Velocities are manufacturer-stated (test-barrel). Discontinued loads dimmed.
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 9mm Winchester Magnum
1 model in the database chamber 9mm Winchester Magnum. Browse all →
Lineage
Connected reference
History
Introduced in 1977 by Winchester for the Wildey semi-automatic pistol, a large gas-operated pistol designed by James Wildey. The cartridge offered genuine magnum performance from a semi-automatic platform. The Wildey pistol gained cult recognition through Charles Bronson's 1985 film 'Death Wish 3' despite limited commercial sales. Winchester discontinued factory ammunition in the 1990s.
FAQs
- What twist rate does 9mm Winchester Magnum use?
- 9mm Winchester Magnum typically uses a 1:10 twist rate.
- What bullet diameter is 9mm Winchester Magnum?
- 9mm Winchester Magnum uses a 0.355″ (9.017 mm) diameter bullet.
- Is 9mm Winchester Magnum still in production?
- 9mm Winchester Magnum is discontinued; typical availability is collector.
- What is 9mm Winchester Magnum used for?
- 9mm Winchester Magnum is primarily used for hunting, self defense.
- What is 9mm Winchester Magnum based on?
- 9mm Winchester Magnum is derived from the 9x19mm Parabellum case.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 15 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →