BI Studio Wiki - CfGMagazines
Name: Explosive Satchel
Inventory Description: Type: Charge, Rounds: 1, Used on: Ground, Vehicles
Used By: Put
Same goes for DemoCharge.
What is the "killer"? The "Weapon/Mag" or the "Bullet/Ammo"? Or is it the Firing Device (Ace3)?
Edit: Maybe I'll try to Play with the eventHandler Explosion a bit:
Triggered when a vehicle or unit is damaged by a nearby explosion.
Since it is kinda strange to shoot the box with a tank or grenade and not get any results other than raining building parts.