Federal

Absterdam

 

DIAMETER:  4.4 inches
GUN:  4.5-inch Siege Rifle
LENGTH: 10 1/2  inches
WEIGHT:  About 32 pounds
CONSTRUCTION: Common Shell
SABOT:  Lead
FUZING: Zinc Fuze Plug

This projectile proved to be an utter failure in field trial at Petersburg, Virginia, in 1864.  Its use during the war was very limited.