Abstract: An ammunition loading assembly (10) is disclosed for loading a projectile (12) into a barrel (14) of a gun. The assembly includes an urging member (16) for urging the projectile (12) into the barrel (14) and a drive means (18) for driving the urging member (16) between a projectile receiving position outside the barrel (14) and a projectile delivery position inside the chamber (20) of the gun. The drive means (18) includes a drive chain assembly (22) that moves the urging member (16) between the projectile receiving position and the projectile delivery position, so that the projectile is released just before the barrel engraving and engraves on it's own momentum. The assembly further includes first and second chain-retaining devices (42, 44) for limiting curving of the chain assembly and guiding the chain when moving out of the magazine.