67 posted on 03/06/2008 11:39:49 AM PST by DoughtyOne
(Some think McCain should pick his No 2 now. I thought the nominee was No 2. And that No 1s me off!)
The 6.8SPC is essentially a .277 caliber bullet with a 115 gr weight. The 5.56 is .224 caliber 69 gr (green tip). See the article here for a review of characteristics.
78 posted on 03/06/2008 12:17:09 PM PST by Myrddin