as with any gun try some range time to pattern different chokes with different ammo. We use skeet chokes or improved chokes over decoys, I have not used hevi shot or the likes but they sell aftermarket chokes for that type of shot. Longer range gunning for ducks we use modified chokes. For turkey a full will work but invest in an aftermarket choke designed just for turkey. I would recommend an Undertaker tube as I have had excellent results with mine. Never shoot your gun with choke removed. For slugs an improved will work fine, and there are aftermarket chokes designed just for slugs. When shooting steel remember that steel is hard and unforgiving so when you constrict it through a tight choke, the shot will actually bounce off itself, resulting in erratic patterns, so go open.