Shotgun

The Shotgun  is a ranged weapon which shoots a spread of four bullets. Each firing uses only one bullet, similar to the three-shot burst of the Clockwork Assault Rifle. The Shotgun can be purchased from the Arms Dealer after the Wall of Flesh has been defeated.

It is very effective at very short range, but rapidly loses effectiveness at longer ranges due to the shots spreading out.

Tips
Crystal Bullets are useful against mobs and will hit large groups, and often destroying them in 2-3 shots. Cursed Bullets will help more in PvP as the Crystal Bullets shatter effect will have no effect as of the player being invincible after being hit. The Cursed Flame buff will deal more damage after getting a shot often finishing them as they retreat. Cursed Bullets will also do more initial damage being more useful.