Actually it was probably more than 3 years ago. My little Nikon Coolpix was new, I was pretty new to shooting, starting out with air rifle silhouette. I thought it would be fun to try the picture. So one day before a match, I asked one of the fellows who had a PCP (little recoil) if we could try it.
It was done completely by hand, the rifle resting on a sandbag, my friend holding the rifle and pulling the trigger, while I tried to hold the camera lined up with the scope!
Here's a bigger version (516KB!)
www.curragh.com/pellets/little_piggy.mpg