Think the writer of this may have bought into the original hype of the cartridge. Would like to know how the 425WR could seriously have 200fps on the 404 Jeffery and match the 416 Rigby. Also don't believe the 416 became the 400 of choice after its introduction. It may have become popular after Ruark wrote about Harry Selby using it but the 404 seemed to be the most used .400 in Africa.