I have a 6.8 SPC AR
68forums.com is the place to get the info you need
I don't think the mini is ideal due to it's slower rate of twist
if you already have an AR, just get a 6.8SPC upper, if not, then they start getting kind of up there in price and the mini is a cheaper option
there's a lot of people hunting with them, deer, hogs, even bear, etc...