Great pattern. I have the xtreme and shot the 670 with decent results using Winchester extended range 6's. How was your POA / POI?
My POI was about 1.5" left and about 1.5" low. I'm not sure if it was the gun or me.... When I shot some winchester HV the POI was still 1"-1.5 left but height was good. The HV's has a velocity of 1300 and the extended range is 1225.