Footage showing the 110-C6 ground and sea attack using Mauser 30x184 Hochbrisanzgranate loadout.
Flown on the test server, hanseat mentions that in the footage he attacked an already dead tank with the different ammo.
Footage is of beta so some features may change before final release.

PC Specifications:
Intel core i5 @ 3.4 ghz
16Gb Ram
Nvidia GTX 970

Game settings at High or Very High

Holy Mother Mauser, those 30mm makes a difference on the battlefield.