Excellent news that deadlier ammo has been cleared for use (never mind that we've been obeying "laws of war" that our enemies have no intention of obeying and that we never actually
signed said treaty to obey, but whatever...), but according to that article, SOST ammunition has a lead core, but according to
Defense Review, the USSOCOM ammo is solid copper all the way through (apparently SOCOM wants to go green---no pun intended).