[pdoktar]

30x173 Mk268 APFSDS ~64mm at 1000meters
30x173 Oerlikon FAPDS ~38mm at 1000meters
30x173 PGU-14 ~80mm at 1000meters

Check out tanknet armor scientific forum, topic some autocannon penetration numbers. There�s a lot of other stuff too for the interested one in various topics.