The .666 Teufel is a large-caliber rifle cartridge produced by Schroeder & Hetzendorf.
Trivia[]
- The cartridge has allusions to the Devil, such as its name being the German word for devil, which is "teufel", and the fact that it has a bullet diameter of .666 inches, a reference to the "number of the beast" described in the Book of Revelations, which is 666.