@Render count me as not having a clue here, what kind of impact forces are needed to trigger the detonation on these? Also, do they lose destructive penetrating power with the slower momentum? I've heard of some warheads that will drill into the tank with a liquid metal core that then explodes, but not sure if that's a similar mechanism to these ones.
@lacuda HEAT (High Explosive Anti-Tank) ammo. Molten metal slug.
All it needs is a point detonated fuze.