Living in the city limits I've had to learn to defend my vegetable garden with a Gamo Shadow rifle with scope, and a wrist rocket. The Gamo is a break barrel 1000 FPS and has seen a lot of action for 10 years. Still going strong. I've taken down many rabbits, groundhogs and raccoons with her. The newer models are even better. Highly recommended.
Hopefully that city isnt Indy... because apparently ANY projectile even if powered by springs or compressed air is as illegal as a firearm to discharge.