[Mobhack]

There is no HESH ammo in the game (was never implemented by SSI).

If you made all HE as HEAT you would have all HEAT A/T rounds - BUT no proper HESH HE effect (the HE effect for larger HESH rounds should extend into the next hex, as a HESH shell is a solid lump of plastic explosive, unlike HEAT which is a hollow charge with less explosive than a HE shell).

Cheers
Andy