What is one tool that helps the Stock Control checker determine how much residue a unit should return?

The most appropriate tool to help the Stock Control checker determine how much residue a unit should return is ammunition tracking software. This specialized software is designed to provide accurate data regarding ammunition usage, stock levels, and residue that needs to be accounted for during turn-in procedures. It helps maintain a comprehensive record of what has been issued to the unit, along with what remains, thus simplifying the process of calculating returns.

In contrast, while an Inventory Management System could assist in broader supply chain aspects, it may not specifically address the unique requirements related to ammunition tracking and residue management. The Unit Supply Log, though useful for recording daily supply transactions, does not provide the level of detailed tracking necessary for accurate residue determination. Finally, the Range Safety Officer interview may provide insights into safety parameters or operational context, but it does not supply the required data for residual ammunition. This distinction emphasizes the critical role of ammunition tracking software in ensuring precise management of ammunition inventory and returns.