I only ran some cheap Reminton ammo thru it and the groups were nothing to write home about, 1-1.5" IIRC. I'd expect it to do better with something like Hornady 55 vmax or Federal premium. I have had several t3 lites and all have shot MOA or better with a little trial and error to find ammo/handloads the rifle likes.
Please send questions via PM if you want an answer as this thread has been bumped several times in the last 24hrs.
I would consider trading one of these for a Ruger American Predator +cash, possibly also for a Remington 700 223 with heavy 1:9 twist barrel