Does anyone have data on the shortest pulse width possible on the stock 850 injectors?

This is independent of the driver controlling them. I have an idea I want to pursue, but I lack the equipment to do a proper test on the flow rates (without guessing).

I presume there is a minimum flow rate, since the plunger cannot instantaneously close. I also realize that too short of a pulse width will not send enough energy to open the injector. So, I'm looking for the pulse width range at which it is possible to open and close the injector in the shortest time.

TIA