Chris,
The recoil spring was probably never changed when the barrel was relined, so it is too strong for .30 cal, Luger. Add to that the fact that Fiocci is too underpowered to operate even a normal .30 Luger reliably, you end up with a system which, as you have experienced, has not a hope of operating.
If you intend to continue shooting this pistol--not a bad idea, in its condition--you might consider putting in a more ppropriate spring.
--Dwight
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