RE: 6.8 SPC ???
A 7MM-08 it is not. Shoots a 115 grain bullet at speeds the 7MM-08 can propel 150 grain bullets. It may be the equal of the 7-30 Waters.
The cartridge, IMO, fills a niche that wouldn't even be necessary if our troops could carry good expanding .223 ammunition (like the Hornady TAP round). Apparently, the SS109 NATO stuff we are now issuing to our troops over in the desert has great tactical penetration, but not the greatest knockdown.
The 6.8 SPC is interesting, but I really don't see it as having a very bright future with either civilian law enforcement or hunters. It could be an adequate whitetail deer round at moderate distances - but there are many better choices.