The information on Mr. Lupo's hunts is largely being provided by one ammunition maker to boost sales of .45-70 ammunition. The manufacturer in question actually has a web page located here Garrett Cartridges - Penetration: The .45-70 & .458 Magnums which puts forth the argument that his .45-70 loads are superior to .458's, .470's, etc., for use on African game. This unfortunately seems to convince some people that a .45-70 is first choice of armament.

Richard.