Stuka zu fuss ammo usage

I'm unsure about the number of shots available for the SdKfz 251 Werfrahmen 40.

It's ammo is 3. The Q&A in Dispatches #2 says that each open fire order uses 3 ammo. The rule book says to multiply MLRS by 6 rather than 2, but does it only have enough ammo for 1 open fire order?

So if I call in indirect artillery fire with a single Stuka zu fuss, do I get 6 shots and am out of ammo after that. Or do I get 3 shots and am out of ammo, effectively only shooting once for the open fire order.

Thanks

I think it's a total of 6 dice. 3 rockets x open fire. Then out of ammo and needs to reload.

Six dice per salvo.
Each salvo consumes your whole ammo cap of 3
So you must reload after ech salvo (which takes 2 turns).

Turn 1: Fire. 6 dice. Ammo vehicle resupplies with a resupply order.
Turn 2: Reloading
Turn 3: Reloding
Turn 4: Fire. 6 Dice. Resupply.....

and so on