Big Bill,
When you purchase dies for the .41 Magnum may I suggest spending a few extra dollars for the Redding Titanium dies,best money for dies I ever spent.I shoot 95% cast bullets and their expander is the best expander I have ever used from a stock set of dies.I usually have to throw away the expander plug and buy a custom for cast lead.
I just received today my new LEE carbide dies from natchez with some remington 200gr jacketed hollow point bullets and some different color green bullet cases so i don't mix up my ammo between my 357mag(red) and my 44mag.(blue) I also got the LEE case trimmer too. I ordered 41 brass from two other places but nothing has showed up yet. Next month i'll pop on 1,000rds of new brass again too. I know the ammo/brass is the only thing thats bad about the 41mag. Bill