Description
This cartridge is employed against armored targets and used with 57mm Rifles M18 and M18A1.
HEAT Cartridge M307A1 includes a perforated metal cartridge case containing a plastic liner and a percussion primer and is crimped to the projectile just behind the pre-engraved rotating band of the projectile. The projectile forward cap is threaded to receive a point detonating fuze. A hemispherical copper liner crimped to the interior of the projectile forms a shaped charge to the rear and space forward to provide the standoff necessary for penetration. A steel sleeve brazed to the neck of the copper liner provides a passage from the fuze to a booster pellet in the base of the projectile. The booster pellet extends into the high explosive charge.
M307 uses a paper-lined Cartridge Case M30 and Percussion Primer M46.
Hazardous Components
Filler - Comp B or 50/50 Pentolite (0.4 lb, 0.18 kg)
Booster - Tetryl
Cartridge case - M30A1B1 or M30A1B2
Propelling charge - M10
Primer - M46, M60 or M60A1
See Also
Source(s)
TM 43-0001-28, Artillery Ammunition (chg 11, 2003)
TM 9-1300-203, Artillery Ammunition (1967)
