Even if someone launched a simple 100-lb iron weight at 1,000 m/s. I might see a lower quantity than some others, but absolute ZERO? Such a result is simply absurd, and a killjoy. For example, when engaging forts in Operation Killer Whale, the Duca's AP shells did ZERO damage on impact. I don't know how WG calculates its in-game values, but in WWII, both the Germans and the British held a healthy respect for the punching power of Italian light cruisers, an ability which is not reflected in the game. Yet, the German shell penetrates far better, and does more damage. If we do the (easy) calcs, on this shell, we see that it is possessed of 25 megajoules worth of energy the German 150mm shells on the Nurnberg and Konigsberg, deliver only 21.2 mJ, or roughly 16% less. If we look at WG's published ballistics for the 6' gun on the Duca, we see a projectile with a 1,000 m/s initial velocity, and a 50kg mass.

Past 20k yards, the 1934 reigned supreme. The 15' Ansaldo model 1934 is an excellent example its penetration abilities were second to none at long range, and at short/medium range, were neck and neck with the US 16'/50, and the IJN 18.1'/45.

In WWII, the Italians drew from centuries of cannon casting experience to come up with excellent naval rifle designs. The Duca D'Aosta's guns are pitiful, especially in AP. I know this is a German Kreuzer board, but since there is none for their Axis Allies the Italians, I figured I might as well post here.

World of warships duca d'aosta review