CRAM gun with 1000 internal ammunition "has no internal ammunition"

[An Ning]

A small obstacle I ran into while building today.
I have a vehicle that has 600 ammunition on it, and on this vehicle is a CRAM gun with 1000 internal ammunition.
However, after firing about 5 times, my gun has "no internal ammunition".

How do I fix this? I kinda figured that the gun would be replenishing from the ammunition on my vehicle -like Adv guns and missiles do.

[Doombringer]

Internal CRAM ammo only refills from your ammo supply at a rate of 1 per second per CRAM ammo box.
So a CRAM cannon with only 5 ammo boxes only refills 5 internal ammo per second.

Example:
A 2000mm CRAM uses 197/shot, so it would require 39.4seconds to refill internal ammo used in 1 shot if you only have 5 ammo boxes. Since it starts with 1000 you could fire 5 times even without ammo barrels/makers.
With ammo barrels/makers your rate of fire is going to slow after about 7 shots if you only have 5 CRAM ammo boxes on the gun though.

I swear I explained this in another thread last week... :/
(Just checked, pretty much exact same thread started on Sept 25, so 11 days ago)

[An Ning]

I did a search for "internal ammo" and didn't find what I needed... odd.
Thanks for the explaination, though