I have the counters.
My question remains : can an Ammo Supply explode like an Ammo Dump or not?
The SSR already explains that the Ammo Supplies cannot be moved but can be possessed as SW.
It can change things a lot : my Croatians would not set up in or adjacent to the Ammo Supply if they could explode, and the Partisans could try to fire at the Ammo Supply to destroy them.
But the SSR explaining that a unit can possess the like SW makes little sense if the Ammo Supply could explode...
I completely misunderstood your first question then
I thought that you meant how to identify them as ""Counters"" in a given game.
Rather than how to play them in the game. So sorry mate for any confusion
As Klaus has said, Just by reading the scenario card they are eliminated as if a SW. So No mate, no big boom - a fizzle more than a pop per se