These bullets have swaged lead cores and they are then copper-plated. Soon after copper-plating, every projectile is re-struck to make certain the plating is consistent as well as the sizing is exact. Berry's bullets is a loved ones owned firm as well as their products are made in the USA. https://9m-reload-bullets00751.tribunablog.com/an-unbiased-view-of-9mm-fmj-bullets-for-reloading-53417658