Jclaude has it right re the mouth belling die. I feel you would want a FL sizing die, as well as the neck sizer, to use if you pick up any free range brass. Not so if you get all yr brass by buying factory ammo and shooting it and saving only that brass, or by buying virgin brass.
FWIW, I load target handgun: .357magnum, .38spl, and .45acp. Hunting handgun: .357magnum. Rifle loads: .243Win, .30-'06, .300WSM, 8mmMauser, 7.62x39, .308Win.
I also shoot BP rifle, which of course every round is hand-loaded.
