Handloading is the process used by many shooters to create firearm cartridges by assembling indivudual cartridge components (bullet, powder, primer and case), rather than purchasing those put together en masse and sold commercially, generally in packages of 6 to 50. When previously-fired cases are used, the process is often called reloading. Generally, only Boxer-primed cases (see internal ballistics) are reloaded, though there are exceptions.