Are you talking about the new 6.8 SPC?
Is this in a Contender or Encore?
If it is the 6.8 SPC I don't understand it at all. My understanding is, it was designed for the M-16 type rifles, military and police, to allow a larger bullet for better close-range effectiveness without over-penetration.
However, I read, they used the 30 Remington cartridge which requires boltwork as well as a barrel change. If they had went with the 6.8 TCU, which is a necked-up 223 case, only a barrel change would be necessary.
I can see it being a deer cartridge in the Condender but Im not sure it would be any better than the 30-30.
I've been considering another cartidge for my Contender carbine for my grandsons. I am attracted to the TCU line (6, 6.5, 6.8, and 7) because they use the 223 case.
I may be missing something here. It has happened before.
I am curious how this works out for you and what loads you settle on.