A 2 1/2 or 3 in Mod 686 sound's just like what you're looking for,and you can CCW the thing too if you wish.
But like scooter said a 2 1/2 or 3 in .357 with full-house loads makes quite a racket,also has a hell of a muzzle flash if you miss and you're close enough you can set the target on fire! It's sorta a pocket flamethrower