45_sl,

No one here is biased against the 45-70. We just don't support the idea of using an inadequate cartridge. And comparing American bison to cape buffalo merely reveals ignorance of the cape buffalo. Many thousands of cape buffalo were killed with the 450 Martini Henry, but with unsatisfactory results. The ballistics of the 450 Martini Henry can be found in Cartidges of the World.

Although we do not have bias against the 45-70, you will probably observe some bias against efforts to start arguments, or against people who start threads asking for input and then become unhappy when they receive input.