Abstract: A telescoped ammunition round comprises:a propellant charge having an axial cavity for supplying firing power to the ammunition round;a control tube means housed within the aft end of the axial cavity;a booster charge within the axial bore of the control tube, fireable in response to a primer means of the ammunition round in communication therewith; anda sabot/projectile assembly mounted within the axial cavity, its aft end extending into the control tube, wherein the sabot comprises an integral piston at its aft end to receive propulsive forces upon firing of the booster charge of the ammunition round.

Abstract: A telescoped ammunition round has a projectile positioned in the axial cavity of a propellant charge. A generally tubular casing surrounding the propellant charge has two longitudinal splits dividing the casing into two substantially identical halves which can separate during firing and sustain the pressure created by the propellant charge without deforming. An end cap assembly couples adjacent ends of the halves of the tubular casing to each other.