Recently announced ammo recall. http://www.winchester.com/library/news/Pages/product-recall-556mm-m855.aspx
I heard about the Winchester Ammo recall from Red Jacket Firearms. They posted it on their Twitter and Facebook pages. I don't shoot any of the ammo that is being recalled. But I did pass it on to people that follow me on both. But it's good to know that everyone is looking out for others that might use the recalled ammo.