Quote:
Originally Posted by bmcgilvray
. . . I laid in a quantity of the Fiocchi .455 ammunition some years ago, as much for obtaining the cases as for shooting purposes. I was very disappointed with the quality of the brass cases. They are thin and brittle. Thee to five cracked upon initially firing the factory loads and handloading durability is dismal . . .
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I have reloaded Fiocchi brass multiple times and they works flawlessly in my best condition 455 but splits a few in another gun. I measured the chambers and found my best example to be .476" and the chambers measure .485" in the one that splits brass.
Quite often splitting cases is due to someone trying to smooth out the chambers and enlarging them in the process. Check your chamber dimensions and see what you get??