I got a little huffy there sorry about that. I have not been everywhere and done everything but I have been in this sport for many years and I don't take to being talked down to. As someone said above any cartridge that will completly penetrate two Cape buffalo is hardly a minimal cartridge. I thought the artical was interesting and I know that many here are interested in the old 45-70. It was for them that I posted the artical which can be found in the March 2004 issue of Rifle magazine. The American Bison was nearly wiped off the face of the earth with the black powder loads of the 45-70. With the new Garret and Corbon loads it is a formidable weapon in the hands of a decent shot. On paper it does not stack up to some of the super magnums but with bullets up to 550 grains and velocity to 2000 fps, there isen't much in NA or Africa that will can't be cleanly killed with this rifle. The Ruger number one is a fine rifle that will squezz the last drop of Velocity from this cartridge. However the above loads work well through the Marlin and the Chamber pressures are listed in the artical as well. 28000-30000 was the cup for the corbon 405 penetrater. from the marlin barrel it clocked 1800 fps.