Projectile for scattering of a load

Claim 1

A projectile containing a load to be ejected therefrom during flight, comprising, a one-piece elongated casing having a streamlined outer surface and having a portion defining a space containing the load, a removable base enclosing the space and being adapted for removal or break up during ejection of the load, such ejection capable of being effected by an ejector charge or a mechanical device with a delay relative to the moment of firing the projectile, said casing being of steel material and having a first wall thickness along a section of said portion which is less than the wall thickness at the remainder of said portion, a metallic cylindrical liner at said section in engagement with an inner wall of said casing, said liner being of a material of less weight relative to said steel material, said liner having an inner diameter substantially equal to an inner diameter of said remainder of said casing portion containing the load, an external guide ring on said casing at a location of greater wall thickness relative to said first wall thickness, and an outer surface of said liner and said inner wall of said casing having interengaging projections and grooves disposed transversely of said casing, whereby any weakened areas caused by an interconnection between two parts of said casing are avoided by said one-piece casing thereby assuring ejection of the load through said removable base, and whereby said interengaging projections and grooves prevent said liner from moving longitudinally relative to said casing to thereby avoid any fractures in said liner caused by inertia forces during firing.