With built in stethoscope?
My mates air rifle is too powerful! Muzzle exit velocity is circa 600 ft per second = 400 mph! Does drop to 200 mph by 100 yards but by then highly inaccurate! Hmmm may need to put thinking cap on (without windscreen wipers!)
I would just use a catapult with small stone and stand around 20-30ft away.
