Dude Naitrax, you're telling absolute non-sence.
The Sekhmets Vigor isn't 1-hitkill anymore once u get to the 60ies
I think too, there is yet more to discover about this gun.
In coop if the one with the firestaf shoots 1 round, only the firestaff will lose 1 sekhmet vigor round.
However in solo, if you shoot it with for example the firestaff. The sekhmet vigor's ammo will be decreased in ALL staffs.
Meaning there must be something behind it, why else would they have made a difference.
I think once all your staffs are empty, we need to shoot at some thing with the sekhmet vigors. Each staff 1 shot.
This is just some brainstorming, Ive been trying lots of things but I haven't managed to figure this out yet. Cmon ppl let those braincells work