I've switched from 168 gr Bergers to the 180s and I tried out H-1000. My goal was to push them over 2900 fps, 2950 if possible. I worked up from 62 gr to 64.5 gr. The 64.5 velocity was right at 2950 fps. However, 63 gr looks to be the magic number. The velocity was at 2890 fps and ES of 7 fps. I'll easily give up 60 fps for the group it shot. The group measures .54" vertical and .35" horizontal. That calculates to approximately .18 MOA x .12 MOA, not bad for 300 yds. I'll load up some more and verify everything in the next few days.