Yeah it's the .700 WTF. Just what you think it means. This is some awesome design work check it out.
http://www.thefirearmblog.com/blog/2011/12/01/the-700-wtf-for-hunting-dinosaurs/
http://www.thefirearmblog.com/blog/2011/12/01/the-700-wtf-for-hunting-dinosaurs/
