User blog comment:Cod1/U.S. Marines with AK-47s/@comment-1200923-20100408224619

@Imrlybord7: The 6.8mm is the perfect round for our Military in my opinion. It's the same size as the 5.56 round so it can fit inside NATO standard STANAG magazines, and it has 44% greater energy than the 5.56 round (M4 configuration) at 100-300 meters.Also, The 6.8mm SPC is ballistically inferior to the 7.62x51mm NATO cartridge; however, it has far less recoil, is considerably more controllable in rapid fire, and much lighter, allowing operators to carry more ammunition than would otherwise be possible with the larger caliber round.