This is just me, personally, but.... If I am buying a DR, I am buying for dangerous game in Africa. With that being said. 375HH, 375HH flanged, 416 Rigby, 450NE, 470NE, 458WM, etc.
I'm sorry but I can't quite discern why anyone would want a DR in 45-70. At that rate, they would just get the...