BARRELS
*History notice:
You can see that the barrels of the turrets are too close together. This was an action to reduce size and weight. The close proximity then of the shells fired in the air, resulted in aerodynamic interaction between them and thus wide spread.
The above reason, together with poor factory quality control of the cordite, resulted in the poor results of the Italians in naval battles of WW2, although they didn't lack the fighting spirit (except the admirals).
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