Modified propellant increments for short range training round propulsion system

A modified propellant increment for an ammunition round propulsion system, comprising:

• (a) a body composed of a combustible propellant material and having a hollow interior, said hollow interior of said body being empty of any propellant other than said propellant material composing said body, said body being semi-annular in shape and defining a central mounting cavity;
• and
• (b) means defining a plurality of holes through said hollow body which communicate the exterior of said body with said hollow interior thereof for ensuring complete combustion of said body upon burning thereof, said holes being defined in portions of said body located on opposite sides of its hollow interior.

A method of converting an ammunition round from full to short range for military training purposes, comprising the steps of:

• (a) providing an assembly of short range propellant increments having hollow bodies perforated by a plurality of holes, composed of combustible material, and being empty of any propellant other than the combustible material composing their bodies;
• and
• (b) substituting the assembly of short range propellant increments having the empty perforated bodies in place of an assembly of full range propellant increments having imperforate hollow bodies filled with propellant charges separate from the combustible material composing their bodies.

A modified propellant increment for an ammunition round, comprising:

• (a) a body composed of a combustible propellant material and having a pair of substantially planar opposite end walls and a continuous arcuate shaped sidewall interconnecting said end walls and together therewith defining a hollow interior;
• and
• (b) means defining a plurality of holes through said opposite end walls of said hollow body which communicate the exterior of said body with said hollow interior thereof for ensuring complete combustion of said body upon burning thereof.