This is from Wikipedia:
According to a recent interview with Carlo Fiocchi, the head of Fiocchi America, more than 75% of the ammunition sold by Fiocchi in the United States is also manufactured in the United States at Fiocchi America's production facility in Ozark, Missouri.[1] Specifically, Fiocchi America's composition of U.S. ammo manufacturing and sales according to the interview is as follows:

95% of the center-fire rifle ammunition, which accounts for ~15% of Fiocchi’s U.S. sales
75% of center-fire pistol ammunition, which accounts for ~35% of Fiocchi’s U.S. sales
100% of shotshells, which accounts for ~35% of Fiocchi’s U.S. sales
0% of rimfire ammunition, which account for ~15% of Fiocchi’s U.S. sales (along with components).


Don't know if that helps, or not.