1000rds – 357 Mag Fiocchi 142gr. FMJ Ammo For Sale. This is Fiocchi 357 Mag 142gr. FMJ ammo. This ammo is manufactured by Fiocchi in Italy, and is excellent quality ammo. It is clean and accurate. This ammo is brass cased, boxer primed, non-corrosive and 100% new factory fresh. This is some excellent target ammo for the price. It comes packed in a 50rd. box, 20 boxes per case.