treblig1958, J.A. Hunter had to kill over 1000 Rhino on control and many hundreds of elephant in Kenya and East Africa in the 1950s, I will quote him now..."I have many friends in Nairobi cemetary who put their faith in magazine rifles, I have relied on a Holland & Holland .500 double barrel rifle with 24" barrels and weighing 10 pounds, 5 ounces. If it had failed even once, I would not be writing these notes" so there is a rifle that will stop any animal on earth if you can shoot it, best, Mike