[Mobhack]

Sabot is used in field guns for a reduced-range AP round since the basic round has a huge range. The game does a steadt pull-down based on gunrange for AP so the long ranges of the HE round are not a good basis for an AP round. Sabot is also used for weak AP like in the short french 37mm Puteax gun. The sabot-AP round has a shorter range so the AP value will fall off quicker.

Read the Mobhack help if you need details on game mechanics.