Harpoon in Fallout 76 is a type of Ammo. Ammo are used in charging firearms of all kinds; such as powder, balls, shot, shells, percussion caps, rockets, missiles, energy, etc. The purpose of ammunition is to project force against a selected target or area.
The level of the player character determines how many and which types of ammo may appear in containers or on defeated enemies. However, there are certain types of ammo that will only appear at specific locations.
Weapons using this ammo
Location/Where can you find Harpoon
.308 Round ♦ .38 Round ♦ .44 Round ♦ .45 Round ♦ .50 caliber ball ♦ .50 Round ♦ 10mm Round ♦ 2mm EC ♦ 40mm grenade ♦ 5.56mm Round ♦ 5mm Round ♦ Cannonball ♦ Crossbow bolt ♦ Cryo cell ♦ Flare ♦ Fuel ♦ Fusion cell ♦ Fusion core ♦ Gamma Round ♦ Mini nuke ♦ Missile ♦ Paddle ball string ♦ Plasma cartridge ♦ Plasma core ♦ Railway spike ♦ Shotgun shell ♦ Syringer ammo