Very nice! I haven't got a single group like either of those with my 1:10 Dtech yet. That's pretty awesome, especially with factory loads! That could be a consistent 600 yard PD gun with that load.
I've found that the persistence I endured with the first two 204's paid off. Shots at 350 yds or less weren't too much of a challenge as long as I called the wind and did my part behind the trigger.