I went with a Pac-Nor (5 groove) 1 - 10" #3 Contour @ 24" for a Win. Classic action.
Many, forum members here, are VERY pleased with the 3 groove barrels from Pac-Nor too.
I think the #4 contour might be too heavy.
Things you'll want to consider is shank length (as members will tell you short is better, but it's purely up to you).
What's the weight you want this rig to come in at?
