case shot

a collection of small projectiles in a case, to be fired from a cannon.

Also called canister, canister shot.

Origin of case shot

First recorded in 1665–75

The rude gaps torn by the shells and case-shot were closed as quickly as they were made.

Reply of the Philadelphia Brigade Association to the Foolish and Absurd Narrative of Lieutenant Frank A. Haskell |Various
Case-shot was formerly called “canister,” though the term now used occurs as early as 1625.

Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 |Various
The Texans sprang into rank, we jumped to our guns, and sent a case-shot tearing down through the woods.

From the Rapidan to Richmond and the Spottsylvania Campaign |William Meade Dame
Well steered; edge toward him, and when you fire bring your guns to bear right among his men with the case-shot.

Life Aboard a British Privateer in the Time of Queen Anne |Robert C. Leslie

On being discharged the projectile delivered the bullets in a shower somewhat after the fashion of case-shot.

Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 |Various

case shot

another name for canister (def. 2b)