20 gauge 3''
Hunted from mid-October 2009 in SD to January 31st in Kansas. Almost every week-end. Used a 20 gauge Montefeltro(silver) and Fiocchi Golden Pheasant ammo in 3" #5 shot. Had no problem with knocking them down up 40-45 yards away. Some longer! Also nice to carry a gun that only weighs 5#6oz.