
The body of the projectile is made from cold dracon steel. The projectile nose and body are filled with incendiary composition.
Percussion primer
Incendiary - I136 (3.92 oz, 109.76 g)
Propellant - 75-1-178A (470 grains)
Nothing else to see.
TM 43-0001-27, Small Caliber Ammunition (chg 7, 2004)
OP 1664, Volume 1 - US Explosive Ordnance (1947)