I have never been a fan of the 5.56 round as a combat cartridge for out military, especially in an urban combat zone. While the light, fast bullet is great for target shooting and the rifle is plenty accurate, it is just too small to cause severe, one stop damage. Now the debate for a more effective cartridge has hit the mainstream.
1 out of 5 soldiers surveyed wanted a bigger caliber. Well, umm duh. If someone was shooting at me, I would want a .50 Cal. The 5.56 round currently in use is the M855, which is designed to defeat light body armor at 200 yards. It was not designed for unarmored people at 10 feet or for shooting through walls, ceilings, or cars to hit the jihadist on the other side.
http://news.yahoo.com/s/ap/20080527/ap_on_go_ca_st_pe/battling_over_bullets
