Rifle · Not SAAMI standardized
10.57 Lazzeroni Meteor
A proprietary rimless magnum introduced by Lazzeroni Arms in 1997, firing .416 (10.57 mm) bullets, typically 400 gr at about 2,800 fps, for heavy and dangerous game..
- Caliber
- 0.408″ · 10.363 mm
- Introduced
- 1997
- Case
- Rimless
- Parent
- 7.21 Lazzeroni Firebird
- Primary use
- Hunting
- Status
- Active
- Introduced
- 1997
- Type
- Rifle
- Origin
- United States
- Inventor
- John Lazzeroni (Lazzeroni Arms)
- Manufacturer
- Lazzeroni
- Standard
- Not SAAMI standardized
- Status
- Active
- Availability
- Specialty
- Case capacity
- 111.1 gr H₂O
- Twist (typical)
- 1:14
- Primer
- Large Rifle
- Case type
- Rimless
- Max pressure
- 60,900 psi, SAAMI transducer
- Eff. range
- 250 yd
- Max range
- 5350 yd
- Recoil
- 101.6 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 10.57 Lazzeroni Meteor, 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
- 7.21 Lazzeroni Firebird
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.
Dimensions · secondary source| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 10.36 | 0.408 | · |
| Neck ⌀ | 11.28 | 0.444 | · |
| Shoulder ⌀ | 14.22 | 0.560 | · |
| Shoulder angle | 30° | — | · |
| Base ⌀ | 14.66 | 0.577 | · |
| Rim ⌀ | 14.68 | 0.578 | · |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.14 | 0.045 | · |
| Neck length | 10.26 | 0.404 | ≈ |
| Case length | 70.87 | 2.790 | · |
| Overall length | 88.75 | 3.494 | · |
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. 10.57 Lazzeroni Meteor 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 10.57 Lazzeroni Meteor was introduced in 1997.
FAQs
- What twist rate does 10.57 Lazzeroni Meteor use?
- 10.57 Lazzeroni Meteor typically uses a 1:14 twist rate.
- What bullet diameter is 10.57 Lazzeroni Meteor?
- 10.57 Lazzeroni Meteor uses a 0.408″ (10.363 mm) diameter bullet.
- Is 10.57 Lazzeroni Meteor still in production?
- 10.57 Lazzeroni Meteor is active; typical availability is specialty.
- What is 10.57 Lazzeroni Meteor used for?
- 10.57 Lazzeroni Meteor is primarily used for hunting.
- What is 10.57 Lazzeroni Meteor based on?
- 10.57 Lazzeroni Meteor is derived from the 7.21 Lazzeroni Firebird case.
Sources & provenance
- Manufacturer Lazzeroni Arms — Factory Loaded Ammo — 10.57 (.416) Meteor 400gr Swift A-Frame (product page) · grain weights, bullet ⌀ archived
- Manufacturer Lazzeroni Arms — Loading Data — Lazzeroni Caliber 10.57 (.416) Meteor (official load-data PDF) · velocity, grain weights, bullet ⌀ archived
- Secondary 9.53 Saturn (Lazzeroni-based wildcat writeup) · year
- Secondary Complete List of All Centerfire Rifle Ammo Cartridges / Calibers Ever Produced · year
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
