Description
This dummy projectile and dummy propelling charge are inert and are used for training troops in handling ammunition and loading weapons.
The dummy projectile has a bronze cap, a steel body, a bronze forward hand (to simulate a bourrelet) and a bronze rear hand (simulating a rotating band). In configuration, weight and center of gravity, the projectile resembles a service round. The body is hollow and contains a spring loaded impact plunger to assist in extraction from the weapon. Exterior markings indicate weapons with which the dummy projectile may he used. The dummy propelling charge is also inert and simulates a service charge in size and weight.
M7 projectiles are to be used for training with gun cannons only. However, M7B1 projectiles are also suitable for loading in howitzers. Both projectiles are identical except that the M7 cap is made of bronze and the M7B1 cap is made of malleable iron.
The projectile is blue, black or bronze with white markings.
Functioning
Since both projectile and propelling charge are inert, the only functioning involved is the action of the internal plunger in the projectile. When the round is rammed into the forcing cone of the cannon barrel, the plunger is pushed forward against the plunger spring. On rebound, the plunger strikes the internal base to loosen the projectile in the forcing cone and assist in extraction through the breech.
Hazardous Components
No information about hazardous components.
Physical Data
Length, overall - 27.56 in, 700 mm
See Also
Nothing else to see.
Source(s)
TM 9-1300-203, Artillery Ammunition (1967)
