If anyone doubts Elmer Keith (and they shouldn't), then they should take a look at Brian Pearce's article in "Handloader" a few years back where he duplicated Elmer Keith's 600 yard shot on a life-size mule deer target. Pearce used original Remington 44 Magnum factory ammunition and a pair of original, S&W pre-29 44 Magnums the same vintage as the revolver Keith used. Pearce was able to replicate Keith's shot repeatedly with that combination.
