There was a thread a month or so back about the French MAB Model D automatic pistol in 32 Automatic (which, BTW, the French refer to as 7.65mm Court, or Short, because their army used a 7.65mm Long for a while). A fellow who said he worked at the MAB factory said they made the firing chambers of pistols intended for export to the US a slightly difference dimension than the ones intended for use in Europe. I'll add a link to the thread to this post if I can find it. I think the difference must be extremely small, and may pre-date the adoption of international cartridge standards.
Here it is - it is the post by "Dullahan":
I very much doubt what he is talking about is big enough to make a difference in loading dies.