I went out this morning for a few hours with the hw100, my first shot was a rabbit at about 15 mtr away under a log and i missed it, (well pissed off).
So i set out some pea size stones at 15, 25,35 and 45 mtrs i started with 45 and worked down to 15 and got them all, tried a few more at 15 and got them so it must have been me getting giddy with the first shot and missing, after a walk about i ended up with 2 rabbits and 4 collards all within those ranges.