First of all, it's a rifle bullet. Second, it was also Corey Taylor's physical dimensions in highschool- 30 in waist, 30 in pant leg, 150 lbs. It is also a code for "total nuclear annihilation", a possible reference to growing up in the Cold War. This is supported by the wavelength of residual radiation from fission being 30/30/150 nm.
First of all, it's a rifle bullet. Second, it was also Corey Taylor's physical dimensions in highschool- 30 in waist, 30 in pant leg, 150 lbs. It is also a code for "total nuclear annihilation", a possible reference to growing up in the Cold War. This is supported by the wavelength of residual radiation from fission being 30/30/150 nm.