I have a brass framed Pieta in .44 1858 Remington and must have shot 800 or more rounds through it by now. It is doing just fine. I use 28 gr. of Pyrodex in it. I really cannot complain as it is a fine shooter.
However, I am not sure that a brass framed .44 Remington (and some other brass framed replicas) is historically correct, and sometimes I would like to really load it up if I could...so...in a perfect world, I would prefer steel.