Shells will travel about 13k from time of fire to the reload sound is done, u figure the secs.
shell to bomb weight, takes 2 hits from 8" guns to sink Cruiser so
2 shots x 3 shells = 6 shells
6 shells / 2000lb (cruiser death lbs) = 333.3333 lbs per shell. so id say
each shell is near 350 lb bomb equivalent.