Hawg makes a good point. Correct Sizing is very important in this calibre with it's (relatively) fragile brass. The 44-40 dates to the black powder era and it's brass was designed for use with the lower pressures of the age. As such it is thinner and more easily damaged in reloading than the 44 special. Not a big problem but requires a bit more attention to detail when loading.
Mark Lane to William Buckley: "Have you ever referred to Jessee Jackson as an ignoramus?"
Buckley: "If I didn't, I should have"