Bulletsize was formed in 2004 by Andreas Persson but did not get its regular members until 2006.
The band made a maxi single the same year which is still not released. Micke, the bassist was replaced by Christofer.
The first full-length was released with Nightrose Records. In 2009, the trio was strengthened with Kjell. In 2010, the album "The Apocalypse" was released to later be re-released with Sliptrick Records, where the band also released the album "Numb". During the "Numb" recording, the original drummer Niklas leaves the band and is replaced by Erik, who does a number of gigs but he also leaves the band and Jonas takes over. Then the album "Pansar" is released with Iron Blood Death Corp.
In 2018 the band is put to rest.