M mtharper New Member Joined May 5, 2010 Messages 3 Location Hermiston, OR Feb 22, 2012 #1 I found some old H337 powder, was told it was developed for the 5.56. I searched the net but can't find any information on it. Can you help me?
I found some old H337 powder, was told it was developed for the 5.56. I searched the net but can't find any information on it. Can you help me?