According to pictures I've seen just now, the bomb rack in a b-24 were arranged in pair on each side of the bomber bay, bomb being stacked one above the other. So as previously mentioned, even with a delay of 0 they would not hit the exact same spot because they don't really drop from the same height. Moreover, these are unguided bomb and very subject to windage during their drop and to the wind hitting them exiting the bomb bay that would sway them off a bit. These old times bomber WERE carpet bomber. Even if trying to destroy some precise target, they would send a large volume of ordnance to ensure enough hit. precision bombing was a fighter business until the introduction of guided ammunition.
PuppetZ