Richard:
I really can't tell you which makers may use Cheddite. I do know they are made in France.
With that knowledge, and the fact that Fiocchi and Nobel primers are made in Italy, I would feel reasonably safe in assuming (always a risky thing) that Italian-made cartridges are made with Italian primers.
I have not had any pierced primers with either Fiocchi or Nobel brands personally.
And... if you surf some of the other shotgun boards, you'll find the Cheddite pierced primer syndrome is not uncommon.
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