Federal

Spherical

 

DIAMETER:  About 6.84-inches
GUN:  42-pounder smoothbore, 7-inch Caliber
LENGTH:  -
WEIGHT:  About 31 pounds
CONSTRUCTION: Common Shell
SABOT:  Wooden Cup - Missing
FUZING: Wooden Fuze Plug

Spherical projectiles of this caliber saw very limited use.  This pictured specimen was recovered from Port Hudson, Louisiana.