Gauss shotgun

The Gauss shotgun is a ranged weapon

Characteristics
The Gauss shotgun is a powerful shotgun with damage superior to other firearms in its class. Like the Gauss rifle, the Gauss shotgun can be charged to increase the damage of fired rounds. When crafted, Gauss shotguns use legendary modules, becoming legendary weapons with randomly determined effects.

Although the Gauss shotgun is listed under "energy guns" when crafted, Gauss shotguns do not count as energy weapons like other Gauss weapons. As with other Wastelanders weapons only available with gold bullion, Gauss shotguns cannot be traded or dropped.

Crafting
Gauss shotguns are always crafted at the maximum level available to the player character. The weapon will be a one-star, two-star, or three-star legendary weapon with randomly determined effects.

Weapon modifications
Weapon mods can only be crafted if the corresponding plan is known. Mod plans for the Gauss shotgun are bought from Samuel for gold bullion and cannot be learned from scrapping Gauss shotguns.
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Locations

 * The Gauss shotgun can be crafted at a weapons workbench if the corresponding plan is known. The plan can be bought from Samuel for 500 gold bullion with a Settlers reputation of Ally.
 * Once the plan is known, Gauss shotguns may be found as legendary weapons, earned either as quest rewards or from the Purveyor Murmrgh, like other items that require plans to be learned to add them the legendary loot pool. They can never drop from enemies as the game is checking if the enemy that died knows the plan, which is a condition that can never be met.

Behind the scenes

 * Joon Choi created the Gauss shotgun concept, including the extended, blunderbuss, and shielded barrels, as well as extended and extra power magazine modifications.

Bugs

 * Firing the Gauss shotgun without charging will reduce the on-hit damage by more than 50%.
 * The explosions created by the Gauss shotgun will deal 15% damage regardless of charge.
 * If the pellets do not hit the target (e.g. shoot floor or feet), the explosion damage will be 120% instead of 15%. Gauss shotgun is using an effect based on the Gauss rifle, rather than the "shotgun" Explosive legendary effect.
 * Charging the Gauss shotgun in VATS and firing may always miss. Charging the Gauss shotgun before entering VATS will never trigger the bug.
 * Toggling FOV perspective or ADS while charging the Gauss shotgun may lock the player in ADS. Press the ADS button again or weapon bash to free yourself.
 * CAMP allies can reward the player with an Explosive Gauss shotgun for certain daily quests. The passive explosive effect is overridden by the "shotgun" Explosive legendary effect, and will deal 3% damage. Gauss shotgun lacks the energy weapon keyword.