I am aware one direct hit from 11 inch on Ajax which knocked out two turrets. There were several near miss bursts which caused shrapnel damage and casualties and later examination of the damage found that two of the bursts were inboard from 4.1 inch shells.alecsandros wrote: I know of 2 x 11" hits on Ajax, are you sure about 105mm gun hits ? And what was their consequence ?
Achilles also suffered significant damage from shrapnel and crew casualties from it included senior officers on the bridge and gunnery control. All these are believed to be from 11 inch.
From the German side Rasenack records that AGS opened 4.1 inch fire on Ajax and the two hits were reported by the German gunnery observers, though there was a caveat in that the volume of large and small calibre shell splashes around the two cruisers made observation difficult.