Here's a video from today's experimentation. Hornady 180 Interlock SP at 3k. I'm going to load some up in my .30-06 to see what they do with a little less velocity.
http://www.youtube.com/watch?v=KTbGHYisC2I&feature=youtube_gdata
http://www.youtube.com/watch?v=KTbGHYisC2I&feature=youtube_gdata