
The cartridge is used for training, gun testing, and gull system function tests.
The cartridge contains a hollow, inert projectile which has a cavity to control the weight. The aluminum nose is swaged to the body.
Primer - Electric, M52A3B1
Propellant - IMR 7013 or WC 875 (500 grains)
Nothing else to see.
TM 43-0001-27, Small Caliber Ammunition (chg 7, 2004)
OP 1664, Volume 1 - US Explosive Ordnance (1947)