The canister load for the 7" Brooke rifled canister was 114 1.3" iron shot and the Federal 15" Dahlgren or Rodman Smoothbore had 600 1.3" iron shot. The largest Federal canister for a rifled gun was for the 6.4" Parrott (100# rifle) which was 48 2" iron balls. The largest stand of quilted (bagged)Grape shot was for the 15" Dahlgren or Rodman smoothbores which had 18 4.55" iron balls.