Both charge five and charge super project beyond the end of the metal cartridge case. Unlike the M1 ammunition, which is 'semi fixed' and loaded as a complete round, 105 mm Fd is 'separate, cased'; the shell is loaded and rammed by hand, then the cartridge with propellant is loaded. By the time the L118 entered service, propellant sub-zones A and B originally used with the Abbot had been replaced by an aerodynamic spoiler (a ring slipped over the nose of shell to lodge on the ogive) to reduce the minimum range at high angle fire when this was required.