Yes, 45-70. I don't load it to redline though.
I've got the Winchester 1886 short rifle in .45-70 (Made by Miroku, in Japan). Front sight is too low. With the rear sight all the way down, it still hits like six inches high at 100 yards. I guess the solution is going to be to install a taller front sight.
Of Course I can only use standard pressure .45-70, unlike your Marlin.
