NitroX:
Appears that I need to clarify a bit about the cast bullet that I designed.I am the sole user of this design and am not trying to sell them, Since the original poster is from the U.S. I guessed that he is referring to American Bison which is what I took with my rifle.For Cape Buffalo or Scrub Bulls a 45-70
would be a little too much adventure for me unless there were no other option. It might do the job but I would rather have more get-up-and-go in case things got dicey.

Hoosier