Friday the 13th, the day before Valentines Day 2015, ATF ended close to a three decade old relationship with SS109 and M855. In its lengthy breakup note ATF noted that "in 1986, ATF held that 5.56mm projectiles in SS109 and M855 cartridges were exempt," from being classified as armor piercing under the "primarily intended for sporting … Continue reading A Pre-Valentines Day Massacre