The .510 DTC EUROP is a French rifle cartridge developed by Eric Danis in order to skirt firearms legislation in Europe which regulates .50 BMG rifles. In response to the .50 Caliber BMG Regulation Act of 2004, which banned future sales of .50 BMG firearms in California, long-range shooters in that state have begun to adopt this cartridge as a manner of avoiding the new legislation. As weapons chambered for the .50 BMG are also banned in Australia, the .510 DTC can be used to skirt regulations there as well.