Shooters that used all of their ammo?

What school/mass shooters used all of their ammunition and had none left when they were done? We hear of shootings where the shooter still had some ammo left when they killed themselves, were killed, or arrested but what are ones who used 100% of it all?

One I can think of for example is Michael Ryan: When asked by the police negotiator how many bullets he had left, he replied he only had one, when asked why he only had one, he said "It's obvious."

Julian Knight (1987) - Lost the final bullet that he planned to use on himself.
Esteban Santiago-Ruiz (2017)  - Brought two magazines along with him and surrendered to Authorities when he ran out of ammunition.

Nathaniel Berhow used all 7 rounds in his 1911 (including his suicide shot)
Jose Reyes fired all 11 shots iirc.