Its about 10 years old and a work done between krieghoff and norma. Norma is loading it and sells it in germany but i dont know if its awaiable in other countries or if any other has it in their program. I think it begun as a low pressure cartridge for krieghoffs inserts not that it was ment as a replacement for obsolete, but it sure is a nice cartrigde for an old kipplauf or rook rifle as Peter suggested. The pressure is right down with 22 Hornet.