The biggest majority of the loading data out there if geared towards the AP platform. I wanted a 6.8 SPC in a bolt gun so I built one on a Savage action. I went with the SPC chamber rather than the SPC II so I would have a short throat and be able to jam into the lands if I wanted to. 5 shot groups that can be covered with a dime are the norm. I started out shooting 90, 100 and 110 grain bullets and will go heavier to reach the lands as the throat wears. Looks like that won't be anytime soon.
AA 2230 and AA 2460 does the trick. Mid range loads makes the brass last a long time.