Shotgun

The Shotgun is a Hardmode ranged weapon that fires a spread of four bullets, though each firing consumes only one item (bullet) of Ammunition (similar to the three-shot burst of the Clockwork Assault Rifle or the pre-hardmode Boomstick). The Shotgun becomes available for purchase from the Arms Dealer for 25 after the Wall of Flesh has been defeated.

Tips
Also is useful for killing the Corruptors
 * Using the Shotgun with Crystal Bullets is useful against large groups. Cursed Bullets will help more in PvP, because Crystal Bullets only hit players with their primary projectiles, since players become momentarily invulnerable when damaged, so the flyoff shards won't have any effect. The greater primary damage of Cursed Bullets and the Cursed Inferno debuff will deal more damage in this case.
 * Using Chlorophyte Bullets is extremely effective due to their homing effect.
 * The Shotgun is effective at short ranges, but rapidly loses effectiveness at longer ranges since the shots spread out the farther they travel.
 * Useful for killing segmented monsters like the Wyvern.