semifixed ammunition

semifixed ammunition

[¦sem·i′fixt ‚am·yə′nish·ən]
(ordnance)
Ammunition in which the cartridge case is not permanently fixed to the projectile, so that the zone charge within the cartridge case can be adjusted to obtain the desired range; it is loaded into the weapon as a unit.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.