Ken Waters wrote up the .416 Taylor in an experimental Winchester M70 they sent to him, as well, John Whooters used a .416 Taylor in Africa for Cape Buffalo.

Both guys seemed to not have trouble hitting the 2,400fps range with 400's and one can always use 300's to 350's for 'lesser' game, at higher speeds, flatter trajectories.

Ken Waters, "Pet Loads" and Wolf Pumbishing's "Wildcat Cartridges Combo Edition" and "Big Bore Rifles and Cartridges" also have considerable data. This data might all be available on-line.