I got some of this ammo at Jensen recently.
Headstamp is T W 8 9.
Searching around, I found this thread where people are a bit cautious about it.
http://www.ar15.com/lite/topic.html?b=3&f=16&t=272820
The guy at Jensen recommended it saying that's what he uses and me being a newbie, the price was right. The small number of rounds I have shot so far gave me no problems so I'm not particularly worried.
Just wondering if anybody else is using it and has any good or bad experiences.