초록 ▼

A round of ammunition for use in training comprises a standard brass cartridge case (1) containing a reduced propellant charge (14) and a bullet (2) of standard shape comprising a core (3) of rigid polyurethane foam and an external skin (14) of unfoamed polyurethane. The core and skin can be moulded

A round of ammunition for use in training comprises a standard brass cartridge case (1) containing a reduced propellant charge (14) and a bullet (2) of standard shape comprising a core (3) of rigid polyurethane foam and an external skin (14) of unfoamed polyurethane. The core and skin can be moulded integrally. The round is designed for firing in an automatic weapon and actuating its automatic mechanism. The skin of the bullet should be not less than 0.02 mm thick to withstand handling, and not more than 0.10 mm thick to avoid production of large fragments thereof on firing. The bullet can have opposite ends both of ogival form to facilitate manufacture and operation. The round is mainly for small arms up to 10 mm caliber.

대표청구항 ▼

A practice round of small arms ammunition of a calibre up to 10 mm for increased safety in training with an automatic firearm said round comprising a cartridge case, a quantity of propellant material means within the case, and bullet means fitted at the forward end of the case to seal the propellant

A practice round of small arms ammunition of a calibre up to 10 mm for increased safety in training with an automatic firearm said round comprising a cartridge case, a quantity of propellant material means within the case, and bullet means fitted at the forward end of the case to seal the propellant material within the case, the bullet means consisting solely of a core of foamed polyurethane material and an external skin of unfoamed polyurethane, any space between the propellant material and the bullet means being entirely free from solid material, wherein on firing the round the propellant material means ignites to produce high energy gases which act directly upon the bullet means to project the bullet means from the case and to consume the bullet means when thus projected from the case.