fixed round

artillery

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The Information Architects of Encyclopaedia Britannica

Last updated

June 26, 2026

Quick Summary

Fixed ammunition refers to a type of ammunition where the projectile is permanently attached to a case that holds both the primer and the propellant. This is in contrast to separate-loading ammunition, where these components are loaded individually.1

A related concept is semifixed ammunition. This type consists of complete rounds that can be loaded as a unit, but its cartridge case is not fixed to the projectile. This design allows the case to be removed to adjust the propellant charge.2

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ammunition
In artillery ammunition, a fixed round is a complete round in which all components are securely joined by a cartridge case. (Though brass was used almost invariably for cartridge cases before World War II, it has since been largely superseded by steel.) In semifixed ammunition, the projectile is detachable…
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In artillery ammunition, a fixed round is a complete round in which all components are securely joined by a cartridge case. (Though brass was used almost invariably for cartridge cases before World War II, it has since been largely superseded by steel.) In semifixed ammunition, the projectile is detachable…
Read More