Im not sure whats going on with the sexton barrage types but I recall not all barrages share cooldown (unless it was changed).
![](https://i.imgur.com/SFKGuGJ.png)
Considering their is the creeping barrage, concentrated barrage and the normal barrage; they still seem to share cooldown. Note that the discription of the concentrated barrage on the valentine says supercharge rounds.
For example; if you fire any barrage be it creeping or normal, if you use the valentines ability nothing will happen nor vice versa (as in barrage ability is on cool down).
Considering there seems to be fuken 6 different barrage profiles I just want to know if its a mix up or intended. It could be fine but im really not sure.
Edit: think I answered my own question, but its still does nothing I believe.