Get you a cheap pump of your choice, Mossberg and Remington have some great wallet friendly options. Make a plug for it (dependent on the state your hunting in) then get out and shoot some clays. You don't need a bunch of money invested in a shotgun to hunt birds. Cylinder bore works just fine and will be a great addition to your safe as you can shoot slugs, buck, etc. Pick a cartridge and stick with it through practice and in the field. I personally use a maverick 88 20'' for bird and squirrel.