Rifle · CIP
10x100mm BWA
10x100mm BWA is a rimless bottlenecked rifle cartridge of Italy origin.
- Caliber
- 0.4063″ · 10.32 mm
- Introduced
- 2020
- Case
- Rimless
- Parent
- .50 BMG
- Primary use
- Hunting
- Status
- Active
- Introduced
- 2020
- Type
- Rifle
- Origin
- Italy
- Inventor
- Fiocchi (approx: maker of record)
- Manufacturer
- Fiocchi
- Standard
- CIP
- Status
- Active
- Availability
- Limited
- Case capacity
- 319.2 gr H₂O
- Twist (typical)
- 1:13.0
- Primer
- Large Rifle Magnum
- Case type
- Rimless
- Max pressure
- 53,664 psi, CIP transducer
- Eff. range
- 300 yd
- Max range
- 1500 yd
- Recoil
- 153.3–165.2 ft·lb
Introduced by Fiocchi
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 10x100mm BWA, 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
- .50 BMG
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.
CIP TDCC · verified| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 10.32 | 0.406 | ✓ |
| Neck ⌀ | 13.35 | 0.526 | ✓ |
| Shoulder ⌀ | 19.57 | 0.770 | ✓ |
| Shoulder angle | 30° | — | ≈ |
| Base ⌀ | 20.35 | 0.801 | ✓ |
| Rim ⌀ | 20.35 | 0.801 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 2.20 | 0.087 | ✓ |
| Neck length | 15.26 | 0.601 | ≈ |
| Case length | 100.00 | 3.937 | ✓ |
| Overall length | 138.40 | 5.449 | ✓ |
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. 10x100mm BWA 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.
Lineage
Connected reference
History
Introduced around 2020.
FAQs
- What twist rate does 10x100mm BWA use?
- 10x100mm BWA typically uses a 1:13.0 twist rate.
- What bullet diameter is 10x100mm BWA?
- 10x100mm BWA uses a 0.4063″ (10.32 mm) diameter bullet.
- Is 10x100mm BWA still in production?
- 10x100mm BWA is active; typical availability is limited.
- What is 10x100mm BWA used for?
- 10x100mm BWA is primarily used for hunting.
- What is 10x100mm BWA based on?
- 10x100mm BWA is derived from the .50 BMG case.
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 →
