Well, I'll be dipped in s%#t!
Did you know that you can load two rounds in a 8-round en-bloc clip for competition purposes? You make an X with them (looking at the clip from the side so one tip points up, the other down), and hold them snug, and you can load them. It works for the 10-round rapid fire sessions for CMP Garand matches. Two rounds, ping, reload, 8 more, ping. It's a beautiful noise!
The two-round demo starts at about 2:50 into this video: http://www.youtube.com/watch?v=I6_o-5vOm-A