Rifle · Not SAAMI standardized · Not standardizedObsolete
.40-72 Winchester
.40-72 Winchester is a rimmed straight-walled rifle cartridge of United States origin.
- Caliber
- 0.406″ · 10.312 mm
- Introduced
- 1895
- Case
- Rimmed
- Primary use
- Hunting
- Status
- Obsolete
- Obsolete
- Obsolete
- Introduced
- 1895
- Type
- Rifle
- Origin
- United States
- Inventor
- Winchester Repeating Arms Company
- Manufacturer
- Winchester Repeating Arms
- Standard
- Not SAAMI standardized · Not standardized
- SAAMI
- Not SAAMI standardized
- Obsolete
- Obsolete
- Status
- Obsolete
- Availability
- Collector
- Case capacity
- 80.9 gr H₂O
- Twist (typical)
- 1:22.0
- Primer
- Large Rifle
- Case type
- Rimmed
- Max pressure
- 38,000 CUP, SAAMI crusher
- Eff. range
- 150 yd
- Max range
- 750 yd
- Recoil
- 18.8–19.5 ft·lb
Introduced by Winchester Repeating Arms
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for .40-72 Winchester, 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.
Wikipedia · secondary source| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 10.31 | 0.406 | · |
| Neck ⌀ | 10.95 | 0.431 | · |
| Shoulder ⌀ | n/a | ||
| Shoulder angle | n/a | ||
| Base ⌀ | 11.68 | 0.460 | · |
| Rim ⌀ | 13.16 | 0.518 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.52 | 0.060 | |
| Neck length | n/a | ||
| Case length | 66.04 | 2.600 | · |
| Overall length | 80.01 | 3.150 | · |
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. .40-72 Winchester is highlighted below.
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.
Connected reference
History
Introduced around 1895 by Winchester Repeating Arms Company.
FAQs
- What twist rate does .40-72 Winchester use?
- .40-72 Winchester typically uses a 1:22.0 twist rate.
- What bullet diameter is .40-72 Winchester?
- .40-72 Winchester uses a 0.406″ (10.312 mm) diameter bullet.
- Is .40-72 Winchester still in production?
- .40-72 Winchester is obsolete; typical availability is collector.
- What is .40-72 Winchester used for?
- .40-72 Winchester is primarily used for hunting.
Sources & provenance
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
