Abstract: A shotshell comprised of shot pellets of different densities and materials which provide increased effectiveness at both close and long range. Preferably the pellets are disposed in longitudinally stratified layers, with the more dense pellets located rearwardly of the pellets of lesser density. The pellets having the greater density maintain a closer pattern at long range, because they are preferably made of tungsten which has a high density and are located rearwardly, while the pellets having lesser density are preferably made of steel, describe a much wider pattern because of their lower density and forward location, and are therefore most effective at close range.

Abstract: A cased telescoped ammunition round 10 for a fin stabilized penetrator 32. A full caliber control tube 24 is positioned within casing 12, its forward end 28 being secured to front seal 22. The side walls 87 of control tube 24 are tapered, increasing in thickness from the free standing aft end 26 of control tube 24 to its forward end 28. Penetrator 32 and sabot 36 are positioned within control tube 24 with obturator band 46 and retaining groove 36 of aft bourrelet 36 positioned within control tube 24. Retaining groove 52 at the aft end of control tube 24 with split ring 50 and retaining groove 48 of aft bourrelet 36 retain sabot 34 and penetrator 32 within control tube 24 until round 10 is fired. Tapered side walls 87 minimize the volume of control tube 24 while assuring that side walls 87 are strong enough to withstand forces acting on control tube 24 forward of obturator band 46 when round 10 is fired.

Abstract: A cased telescoped ammunition round 40 for a fin stabilized penetrator projectile 50. A cylindrical core tube 48 is positioned within the casing 42. Projectile 50 and its sabot 52 are positioned within core tube 48. The space between core tube 48 and casing is filled with the main charge 66. An igniter 62 is located in the rear seal 46 of casing 42 and when initiated, ignites booster charge 64 located within core tube 48 between sabot 52 and rear seal 46. Ignition ports 70 in core tube 48 permit the ignition products of booster charge 64 to ignite main charge 66 when sabot 52 moves a predetermined distance through core tube 48.

Abstract: An improved cased telescoped ammunition round includes a propellant charge disposed in a tubular case and having an axial bore. The case is composed of a skin tube and forward and aft end caps on opposite ends of the tube. The case defines a chamber that contains the propellant charge. Separate forward and aft tubes are disposed in the case extending at least partially through the axial bore of the propellant charge from respective forward and aft ends of the bore. The separate tubes are attached respectively to the forward and aft end caps of the case. A projectile is housed within the separate tubes and the axial bore of the propellant charge, and a primer is disposed within an aft end of the aft tube. The primer is actuatable for igniting the propellant charge to cause firing of the projectile forwardly from the case.

Abstract: In cased telescoped ammunition the improvement which comprises an arrangement for securing the cartridge casing to the end caps so as to enable and limit axial movement therebetween.