ORIGINAL: gmil6184

Mossbergman - i killed my first 5 or 6 turkeys with a remington 870 20 gauge with a factory full choke. A plain old full choke will work just fine out to any reasonable range, with a 12 gauge that should be about 35-40 yards (theoretically). You should def pattern your gun and make sure you are getting plenty of pellets in the kill zone. That being said some of the new after-market choke tubes can throw some pretty impressive patterns, and might be worth the investment, but assuming it patterns well, a full choke should do just fine.