OK due to the reading, and encouragement of you very nice folks i have purchased a 450 marlin ejector barrel, i know most of you suggested 45/70 and have no problem with that.
just found this 450 ejector NIB and could not say no.
how long do you think a 1x30 red dot scope last on it, i aleady have the scope.
i think i will eventually put 2.5 or 4 on it
as you can see the big bore bug is doing well here.
all feed back welcome