I have just been rummaging in the oddments boxes again, pulled out a good condition Lee bullet mould, .45 calibre 250 grain two cavity jobbie, Muir might be able to put me straight on this one, it says this mould is a "R.E.A.L." black powder for rifle,:idea: can these bullets be shot through a 45 / 70 over modern nitro? Lee stock number #34307 90392.