I can report as well that I tried from 41.0 - 41.5 of RE17 .. and I found as well that 41.2 was best for me. Shooting GAP10 6mmCM ( no wind, 61 degress, 56% hum, 733Ft, 29.52" baro) I as well got 1/2 MOA groups at 200 yards. My best was .441 MOA. As for velocity, I averaged 3031 out...