One of the scoops from Thumpy's 3-D House of Airsoft Scoop.it page as Bastard TV make an announcement on their silica rounds... "Safety Alert and a big notice from the BB Bastard guys, who have done some in-depth slo-mo testing of their silica rounds and are going to stop selling them.  Reason is easy to see in the video, and the guys also explain why."