Been there and done that with the cases. Have to be super careful with them. A lot like .22 Hornet.Yes I have the same Marlin in .32-20 and a Ruger Blackhawk that has a .32-20 cylinder. I like shooting the .32-20, but reloading it is a bit tedious, the cases are easily crushed when bullet seating.
I also have a Colt DA revolver in .32-20, but it has some cylinder alignment issues and I have never shot it. Someday I might get around to correcting the problem(s).