I shoot a lot of Sporting Clays with fixed full and xtra full.I see shooters spending more time deciding what chokes to screw in than studying the targets.The days I'm really on the targets are "smoked".If there is a target under 20 yards I do use spreaders.I have competition guns with screw in chokes but shoot 85% of my targets with the imp mod and light full.
Actual game under 20 yards should be shot with spreaders as a full pattern
at short distance sometimes leave skin and feathers.
Spend time developing proper shooting techniques and study of targets
IMHO....not on chokes.