I may be a bit redundant but my choice is the .416 whether Rigby or Remington..400gr A-Frames..they put a serious hurt on buff..Have shot 3 with that combo thus far and 1 with my .375 using 270 Gr A-Frames..this one was actually a western cape buffalo in Cameroon..

In my humble opinion, there was a noticeable difference in reaction by the animal between the 2 calibers..should I go back I would use on of my .416's again..if using a bolt...BUT I do have a WR 470 double that I DO plan to take the next time I hunt over there for buffalo...think that is a must do..

Ripp