Big Guns Bobblehead

The Big Guns Bobblehead is a miscellaneous item It permanently increases the critical damage of heavy weapons by 25%.

Location
Vault 95, in the northeastern room of the living quarters, on a radio. It is guarded by Gunners and assaultrons. To reach the room, once down the elevator, take the first left and progress into the large atrium. Turn right and pass through the residential wing's sliding door. At the lavatory, showers, and residential signs, turn left and progress downstairs.

Move forward through the broken wall, turn right, and move past the Gunner-painted barricade. Take another right into a bedroom, and then a left through the broken wall. The Bobblehead will be in this room on top of a radio.