Big Chief

Big Chief was a pre-War ammunition brand of .357 Magnum rounds.

Background
Their ammunition packaging features the side-view of a Native American wearing a feather headdress. Big Chief also produced Big Chief Brand explosive rounds for the submachine gun, which they advertised on billboards.

Appearances
The products of Big Chief appear only in Fallout: New Vegas, but advertisements for the company appear in Fallout 76.