This is the best 5-shot group I was able to shoot today, at 100 yards:
And this is what I was shooting:
Ammo used was Black Hills 77gr Match .223, rifle has an 18" WOA SPR barrel with rifle-length gas. Glass is the Super Sniper 3-9x42 FFP. Around 3/4 MOA with a crappy stock trigger, I'm very happy with that.