Seems we have great affection for the little 17HMR, myself included. Nice to see it's popular in the UK too.
Here's the result of one session shooting from my BR Pivot in the field with my 17HMR. I was shooting in an alfalfa field, and noticed the little rats were emerging from the alfalfa and scooting across the perimeter two-track and into the sagebrush. Then they'd come out of the sagebrush, stop on the two-track and bail back into the lush alfalfa. Range to the two-track was 160 yards on average.
So I rotated my bench around and settled my scope on the two-track. It was like a shooting gallery, as when the rats would stop out in the open, it was like they were just begging to be shot....I obliged them and had at it.