I own a total of four .30 Luger pistols. The first one I acquired worked great with Fiocchi. The second had all manner of feeding and ejection issues with Fiocchi; I tried all kinds of mainspring and magazine modifications and it still wouldn't work. PPU completely cured all the issues. I then acquired two more .30 Luger pistols, and tested them with both types of ammo in the hope that they would work well with Fiocchi as it is more available. I learned these next two were also jam-o-matics with Fiocchi but loved PPU. In studying the matter not only is PPU a bit more powerful than Fiocchi, the overall length is also longer which seems to make a big difference in eliminating feeding jams.
So 75% of my .30 Luger pistols insist on PPU. Look forward to hearing how yours performs.
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