How many bullets does a Gatling gun have?
The original Gatling gun was gravity fed from a hopper of loose cartridges, and held no specific number of rounds of ammunition. Later Gatlings used a stick type magazine, but capacity of those varied from 20 to 50 rounds. The M-134 minigun, a modern Gatling gun used on helicopters and gunships, has a 4000 round belt. There was no ONE gatling gun, and thus no ONE answer.