US Cartridge, 40mm HEDP, M430, M430A1

 

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Description

This cartridge is a high explosive, dual purpose, impact type round designed to penetrate two inches (three inches for the M430A1) of steel armor at 0 angle of obliquity and inflict personnel casualties in the target area. It is fired from 40mm Machine Gun Mk 19 Mod 3. Not authorized for use in M129 Grenade Launcher.

This cartridge is a fixed round of ammunition with an internally embossed steel projectile body containing a high explosive charge of Comp A5 and a copper liner. The liner in the M430A1 is slightly longer so there is less Comp A5. A PIBD fuze, integral with the ogive and containing a spit-back charge, is threaded into the loaded body forming the complete projectile. An M169 Cartridge Case Assembly is crimped to the projectile. The case is a hollow, bi chambered aluminum cylinder with vents connecting the chambers. The propellant chamber, which contains the propelling charge, is sealed at the rear by a base plug. A percussion primer is crimped into the center opening in the base plug. The propellant chamber acts as a high pressure chamber, and the forward hollow cavity in the case acts as a low pressure chamber.

See Also

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Source(s)

Collaborative Ordnance Data Repository

TM 43-0001-28, Artillery Ammunition (chg 11, 2003)