I too, have a 45-120 but have not worked with it yet.
Hope to have it up & running this year.
I am a little different than the rest of you.
What I am after is a 45 cal BP gun that will shoot the 300-350 gr JHP at about the same speed or a tad faster then a factory smokeless 45-70.
I don't need bigger bullets nor do I need more speed but I do want the BP smoke & thrill and figured I could get all of that from a 120 with BP.
As for the 50 cal, yes, I still intend to do one of some sorts.
The .499 had caught my interest but I want a barrel longer than the 500 S&W so a barrel rebore is in order, about $250.00.
Add to that the setup cost for dies & especially brass ($5.00 @) kind of put the brakes on that.
I have some 50-90 & 50-100 brass already so that would be the cheaper way to go and may be what I do.
Then again, I also have a super nice old Win model 1886 take down in 45-70 that would love a matching barrel in 50-something!!!
That really wouldn't cost much more then what I would spend to set up a Handi.
It would be nice to have a matched pair of H&R Big Bores though.
Might just do both.
Heck, it's only money!!!
LONGTOM