So if you are close enough to ghost load through the tube then you are close enough to get an extra round in the tube then.
I am not sure we have the same definition of Ghost load.
What I have always referred to as ghost load is this
Tube fully loaded, on a older Benelli or a modified new one.
You can pull back the bolt just enough to get a shell in and push the lifter down.
You then load one in the chamber it allows you to increase you capacity by one.
Haven't tried it with the beretta.