Shooting paper targets will improve your aim, but they don't quite capture the experience of emptying a shotgun into a zombie's chest. Not like these lifelike—or should I say undeadlike—zombie targets that bleed like real flesh.
I usually love me some FPS games, but there's something off putting about fake shooting up the real world in Google Maps Street View with an assault rifle. Try it out yourself, put a location in Pool Worldwide and start shooting fake real people and things in Google Maps. Is it weird for you?