Description
This cartridge is used for gunnery training in tank-mounted 105mm gun cannons.
The discarding sabot round is similar in external appearance and is ballistically similar to 2,000 meters with the APDS-T cartridge M392A2. There is a tracer located in the base of the projectile. A plastic band encircles the sabot at the forward end. A fiber rotating band and rubber obturating band are mounted toward the base of the sabot. The igniter tube of the electric primer extends almost the entire length of the propellant packed loosely in the cartridge case. Some M724A1’s may be assembled with the spiral wrapped cartridge case.
The M724 cartridge is a United Kingdom manufactured L45A1 round, modified by replacing the U.K. L1A4 conductive-cap primer with the U.S. M80A1 bridge-wire primer. The M724A1 is manufactured in the United States.
The projectile is painted blue with white markings.
Functioning
The electrically initiated primer ignites the propelling charge and tracer. Cases produced by the burning propellant propel the projectile from the gun. The tracer burns for a minimum of 2.5 seconds. The sabot is discarded after leaving the muzzle of the weapon as a result of setback , centrifugal, and air pressure forces. The solid core of the projectile continues to the target. Since it is a practice round, the projectile lacks the penetrating capability of a service round.
Hazardous Components
Cartridge case - M115B1, M115B1A1
Propelling charge - M1
Primer - M80A1
Tracer - M13
Physical Data
Length, overall - 33 in, 838.2 mm
See Also
Cartridge, 105mm APDS-T, M392, M392A2
Source(s)
