Rifle · Proprietary
6.17 Lazzeroni Spitfire
The 6.17 Lazzeroni Spitfire is the smallest cartridge in the Lazzeroni proprietary family, chambered in .243 caliber.
- Caliber
- 0.243″ · 6.172 mm
- Introduced
- 1997
- Case
- Rimless
- Parent
- 6.53 Lazzeroni Scramjet
- Primary use
- hunting, varmint
- Status
- Active
- Introduced
- 1997
- Type
- Rifle
- Origin
- United States
- Inventor
- John Lazzeroni
- Manufacturer
- Lazzeroni Arms
- Standard
- Proprietary
- Status
- Active
- Availability
- Rare
- Case capacity
- 64.7 gr H₂O
- Twist (typical)
- 1:8
- Primer
- Large Rifle Magnum
- Case type
- Rimless
- Max pressure
- 66,718 psi, SAAMI transducer
- Eff. range
- 400 yd
- Max range
- 3500 yd
- Recoil
- 7.1–11.3 ft·lb
Ballistics
Velocity only, no drag model: no published ballistic coefficient is on file for 6.17 Lazzeroni Spitfire, 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
- 6.53 Lazzeroni Scramjet
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.
Lazzeroni/MAST drawing · approximate| Measure | mm | in | ✓ |
|---|---|---|---|
| Bullet ⌀ | 6.17 | 0.243 | · |
| Neck ⌀ | 7.06 | 0.278 | |
| Shoulder ⌀ | 12.95 | 0.510 | ~ |
| Shoulder angle | 23° | — | |
| Base ⌀ | 13.46 | 0.530 | ~ |
| Rim ⌀ | 13.44 | 0.529 | ~ |
| Belt ⌀ | n/a | ||
| Rim thickness | 1.49 | 0.059 | |
| Neck length | 6.37 | 0.251 | |
| Case length | 51.56 | 2.030 | · |
| Overall length | 67.00 | 2.638 | ~ |
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. 6.17 Lazzeroni Spitfire is highlighted below.
Missing a dimension for 6.17 Lazzeroni Spitfire? Some case measurements aren't in a published SAAMI/CIP drawing yet. Have a factory or reamer print? Send it → — verified hard-to-find data earns a free Lindcott sticker.
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
Shortened .75 in., necked to .243
Connected reference
History
Developed by John Lazzeroni in the mid-1990s alongside the full Lazzeroni cartridge line, the Spitfire shares the proprietary Lazzeroni case with the Firebird and Warbird but is necked to .243 caliber. All Lazzeroni cartridges are manufactured exclusively by Lazzeroni Arms Company of Tucson, Arizona, and brass is not interchangeable with any SAAMI-standardized cartridge.
FAQs
- What twist rate does 6.17 Lazzeroni Spitfire use?
- 6.17 Lazzeroni Spitfire typically uses a 1:8 twist rate.
- What bullet diameter is 6.17 Lazzeroni Spitfire?
- 6.17 Lazzeroni Spitfire uses a 0.243″ (6.172 mm) diameter bullet.
- Is 6.17 Lazzeroni Spitfire still in production?
- 6.17 Lazzeroni Spitfire is active; typical availability is rare.
- What is 6.17 Lazzeroni Spitfire used for?
- 6.17 Lazzeroni Spitfire is primarily used for hunting, varmint.
- What is 6.17 Lazzeroni Spitfire based on?
- 6.17 Lazzeroni Spitfire is derived from the 6.53 Lazzeroni Scramjet case.
Sources & provenance
- Manufacturer Lazzeroni Arms — official 6.17 (.243) Spitfire load data (case length 2.050"; "shortened, sharp-shouldered, beltless magnum design — characteristic of Lazzeroni's entire lineup") · parent_cartridge
- Secondary caliber magazine 2/2011 — "Arizonas Asse: Büchsenpatronenfamilie von Lazzeroni" (full Lazzeroni series data sheet; base .577" for all EXCEPT 6.17 Spitfire & 6.53 Scramjet = .530"; short case = long ca · parent_cartridge
- Secondary Safari Club International — Biggest, Baddest, Fastest Short Mags, Part 1 (Lazzeroni short magnums = the long magnum case with .750" cut out of the middle) · parent_cartridge
Data & sources. Specs compiled from the Lindcott Armory reference; the trajectory is modeled (point-mass), not measured. See methodology. Spotted an error? Report it →
