powerful and sophisticated guns

Bolters fire explosive, .75 calibre rocket-propelled rounds. They are more sophisticated technology than lasguns or slug-guns and more powerful than the equivalent sized weapon in either case so are given to the more deserving or capable. Each round contains a mass-reactive explosive payload, triggered milliseconds after contact with a target. Bolters are made in both pistol, rifle, machine gun-like heavy bolter, and rotary cannon form.