Revolver · Obsolete
.32 Colt New Police
Colt's revolver cartridge from 1896, dimensionally identical to .38 S&W but with a round-nose bullet profile.
- Caliber
- 0.312″ · 7.925 mm
- Introduced
- 1896
- Case
- Rimmed
- Primary use
- Self-Defense
- Status
- Discontinued
- Introduced
- 1896
- Type
- Revolver
- Origin
- United States
- Inventor
- Colt
- Manufacturer
- Colt
- Standard
- Obsolete
- Status
- Discontinued
- Availability
- Collector
- Case capacity
- 9.5 gr H₂O
- Twist (typical)
- 1:18.75
- Primer
- Boxer Small Pistol
- Case type
- Rimmed
- Max pressure
- 15,000 psi
- Eff. range
- 25 yd
- Recoil
- 3–5 ft·lb
- Subsonic
- Capable
Introduced by Colt
Ballistics
Published velocity/energy data isn't available for .32 Colt New Police — an obsolete/collector cartridge.
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 ⌀ | 7.92 | 0.312 | ✓ |
| Neck ⌀ | 8.56 | 0.337 | ✓ |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 8.56 | 0.337 | ✓ |
| Rim ⌀ | 9.53 | 0.375 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.40 | 0.055 | ✓ |
| Neck length | n/a | ||
| Case length | 23.37 | 0.920 | ✓ |
| Overall length | 32.51 | 1.280 | ✓ |
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 Colt New Police is highlighted below.
Factory loads
Being verified
Advertised FPS, energy, and BC are withheld until loads clear verification.
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 Colt New Police
2 models in the database chamber .32 Colt New Police. Browse all →
Connected reference
History
Developed by Colt in 1896 as a variant of .38 S&W renamed for marketing purposes. Chambered in the Colt Police Positive and New Service revolvers. Despite Colt's branding, the cartridge was nearly identical to .38 S&W and gradually merged with that designation.
FAQs
- What twist rate does .32 Colt New Police use?
- .32 Colt New Police typically uses a 1:18.75 twist rate.
- What bullet diameter is .32 Colt New Police?
- .32 Colt New Police uses a 0.312″ (7.925 mm) diameter bullet.
- Is .32 Colt New Police still in production?
- .32 Colt New Police is discontinued; typical availability is collector.
- What is .32 Colt New Police used for?
- .32 Colt New Police is primarily used for self-defense.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; availability counted from 2 live factory loads; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →