A couple of my buddies and I were discussing bison hunting. Here in the lower 48, we use the 45-70, with hunting loads we either reload or buy from Hornady, CorBon, Conley, Garrett or Buffalo Bore. The idea of trying to make the draw for an Alaskan bison came up, and one of the guys, who recently moved down from Alaska, said that the 45-70 was not allowed for bison because "the Model 1873 Trapdoor couldn't shoot hot enough loads to deliver at least 2000 ft. pounds of energy at 100 yards." Since none of us uses these old weapons, we couldn't figure out what the ruling really was. Do any of you out there know about restrictions of this nature?
Thanks very much.