Rifle · CIP
6x51mm ATZL
6x51mm ATZL is a rimless bottlenecked rifle cartridge of Austria origin.
- Caliber
- 0.2429″ · 6.17 mm
- Introduced
- 1997
- Case
- Rimless
- Parent
- .222 Remington
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1997
- Type
- Rifle
- Origin
- Austria
- Inventor
- Andreas Atzl
- Manufacturer
- Andreas Atzl
- Standard
- CIP
- Status
- Active
- Availability
- Limited
- Case capacity
- 36 gr H₂O
- Twist (typical)
- 1:14.0
- Primer
- Small Rifle
- Case type
- Rimless
- Max pressure
- 58,740 psi, CIP transducer
- Eff. range
- 400 yd
- Max range
- 2000 yd
- Recoil
- 3.3–4.6 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 6x51mm ATZL, 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
- .222 Remington
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 ⌀ | 6.17 | 0.243 | ✓ |
| Neck ⌀ | 6.65 | 0.262 | ✓ |
| Shoulder ⌀ | 9.00 | 0.354 | ✓ |
| Shoulder angle | 23.1° | — | ≈ |
| Base ⌀ | 9.56 | 0.376 | ✓ |
| Rim ⌀ | 9.60 | 0.378 | ✓ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | ✓ |
| Neck length | 7.97 | 0.314 | ≈ |
| Case length | 51.00 | 2.008 | ✓ |
| Overall length | 68.00 | 2.677 | ✓ |
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. 6x51mm ATZL 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
The 6x51mm ATZL is a bottleneck rimless rifle cartridge originating in Austria.
FAQs
- What twist rate does 6x51mm ATZL use?
- 6x51mm ATZL typically uses a 1:14.0 twist rate.
- What bullet diameter is 6x51mm ATZL?
- 6x51mm ATZL uses a 0.2429″ (6.17 mm) diameter bullet.
- Is 6x51mm ATZL still in production?
- 6x51mm ATZL is active; typical availability is limited.
- What is 6x51mm ATZL used for?
- 6x51mm ATZL is primarily used for hunting.
- What is 6x51mm ATZL based on?
- 6x51mm ATZL is derived from the .222 Remington 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 →
