These shotguns are all under $300 and will be perfect for Turkeys.

Remington 870 express 12ga. 3 or 3 1/2"
Benelli Nova 12ga. 3 1/2"
Winchester 1300 12ga. 3"
Mossberg 500 or 835 12ga. 500 is 3" 835 is 3 1/2"

If you shop around you can find any of these at close to $250.

I just bought a Benelli Nova at GI Joes for $249.

You could use the gun you have now,but a really tight choke is a good idea for turkeys. How much would it cost to have removeable choke tubes installed on your gun? Its probably easier and not much more $$$ to buy a new gun.
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