[CharlieC]

Umm.. that isn't how wet ammunition stowage works. There were a couple of designs but the simplest was that the cartridge plus projectile was stored dry in a tube which had a concentric tube around it. The space between the tubes was filled with water/glycol/rust inhibitor. The idea was that if the tubes were penetrated by shrapnel the water would leak over the cartridge and lessen the chance of a propellent fire.
The stowage on the turret floor was a fluid filled box with tubes for the shells - in the same way as the tube design the cartridges would be flooded with water if shrapnel managed to penetrate a cartridge case.

Found an image of the wet stowage in an M4A3(76).

Regards,

Charlie