4.38×30mm Libra
4.38×30mm Libra (.17 Libra) is a centerfire cartridge designed for use in personal defense weapons.
4.38×30mm Libra
- Name
- 4.38×30mm Libra
- Field
- personal defense weapon cartridge
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Documentary summary
4.38×30mm Libra (.17 Libra) is a centerfire cartridge designed for use in personal defense weapons.
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Documentary evidence
Documentary basis
Authority files
wikidata · Q4637252 · wikipedia · 4.38×30mm Libra
In this article
Key facts
Key facts
• Name — 4.38×30mm Libra • Origin — Czech Republic • Type — Personal defence weapon Pistol • Designer — Vlastimil Libra • Design Date — 2002 • Manufacturer — Czech Weapons (ČZW) • Is Si Specs — yes • Parent —.22 Hornet • Case Type — Rimless, bottlenecked • Bullet — 4.40 • Land — 4.28 • Neck — 4.90 • Shoulder — 6.88 • Base — 7.56 • Rim Dia — 7.65 • Rim Thick — 1.24 • Case Length — 30.10 • Length — 41.00 • Max Pressure — 430 • Bw1 — 45 • Btype1 — Spitzer • Vel1 — 2300 • En1 — 528 • Balsrc — Small Arms Defense Journal The 4.38×30mm Libra (.17 Libra) is a centerfire cartridge designed for use in personal defense weapons.
Variants
Variants
•.17 Libra [4.38×30mm]: A rimless varmint-hunting and sport-shooting cartridge •.17 Rimmed Libra [4.38×30mmR]: A rimmed varmint-hunting and sport-shooting cartridge for use with break-open actions •.17 Libra Magnum [unknown]: A longer, more powerful 4.38mm rimless round for use in pistols or personal defense weapons
Description
It was designed and has been manufactured by ČZW for use in their ČZW-438 PDW. The cartridge is based on a.22 Hornet cartridge converted to a rimless design and necked down to.17 calibre.
Primary material
Documents and archives
reference work
- “4.38×30mm Libra”, English Wikipedia, consulted as further reading
Reputable secondary · Wikipedia
authority record
- Wikidata, structured authority record Q4637252: 4.38×30mm Libra
General reference · Wikidata
Notes from the source article
Cited by Wikipedia
Notes from the source article
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References
Citations
References
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reference work
Secondary witnessauthority record
General reference
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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