Description
This was the first high explosive round to be developed for 155mm guns. The complete round, as fired, consists of the projectile fuzed either with PD M46 or M47 Fuze, the propelling charge for 155-mm Guns M1917-17A1-18M1, and either a Mk II or Mk IIA 21-grain Percussion Primer.
The Mk Ill Round was modified by adapting the nose of the projectile to take new fuzes and boosters. Complete round of Mk. IIIA1, as fired, consists of the following:
The projectile fuzed with either the Selective Fuze M51 with Booster M21, or Fuze M51A1 with Booster M21A1; or Fuze, Time, Mechanical, M67, with Boosser M21A1.
Functioning
No information about functioning.
See Also
Primer, Percussion, Mk 2A1, Mk IIA1
Source(s)
TM 9-1904, Ammunition Inspection Guide (1944)
