Depends on your particular brand of fun. A magnum revolver, especially one with enough weight to tame the recoil can be a lot of fun.
If you're not into blast and flash, a full-sized, steel-framed 9mm is a lot of fun. You can shoot all day without fatiguing and yet the ammo still has enough oomph to make reactive targets or steel move around satifyingly.
If you're not into blast and flash, a full-sized, steel-framed 9mm is a lot of fun. You can shoot all day without fatiguing and yet the ammo still has enough oomph to make reactive targets or steel move around satifyingly.