Yesterday, I went to my library of Africana, looking for something to re-read. I decided on "Horn Of The Hunter" and began to re-live, vicariously, Robert Chester Ruark's first hunt with Ker and Downey Safaris. I had completely forgotten that Harry Selby's heavy rifle was a double, built by John Rigby and Son, in calibre, drum-roll here please, .450 No. 2 Nitro Express. Now I ask you, gentlemen, what higher recommendation could a cartridge want?