Re: LWRC 6.8 SPC
A buddy of mine has one. It shoots the silver state ammo really well, way better than my lwrc's in 223. It spayed hornady ammo though. Sorry, I don't know the specs on either ammo.
In my experience, LWRC's aren't known for their accuracy. Super reliable (except the repr), but not really sub moa guns. If accuracy is your goal, I would look elsewhere.
btw- I own 2 lwrc 223's, my bro has 2, and the above mentioned friend has 2. I have also had a repr.