If I need .30 Luger I go here.
https://www.luckygunner.com/handgun/30-luger-ammo
That URL should take you directly to their .30 Luger ammo selection. They almost always have Fiocchi available and at the moment they have 31 boxes of PPU too. Fiocchi in both FMJ and lead nose. They seem to keep track of the inventory as well, when I bought some about a year ago for one of my Lugers the inventory available dropped after I placed my order. If your state allows (Ohio does), they even ship it right to your door.