I am loading regular loads for one reason: what cowboy would opt for light loads and small leads?
If I were worried about my score/speed, I might set up a rig wherein I did just that (short barrels, lighter loads, tuned actions), and I totally get guys doing so because they are competetive shooters; but for me for now it is jsut fun so full loads a la real cowboy (and 7-8 inch barrels on pistols, 26" on shotgun, 24.5 on rifle). I don't ever see me thinking of it as competition.
I am already so unbelievably handsome that winning such an event is hardly on my chart of concerns.