It is Fiocchi 357 Mag 142gr. FMJ ammo. This ammo is manufactured by Fiocchi in Italy, and is excellent quality ammo. I have shot 47 rounds of this ammo and I am very pleased with the way it functions. 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.
*When I cleaned my Tracker, I wiped it off first, then ran a dry cloth down the barrel and cylinder. Hardly even stained the cloth. I put a few drops of Militec-1 on the same cloth and nothing else came out. Not believing this, I took my brass swab brush and went through the barrel and cylinder. Took a clean cloth and did the barrel and cylinder again. Negligible GSR! I am amazed at how clean Fiocchi fires and would recommend at least the .357 ball for target practice! 
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