Many years ago I had Redding .44-40 dies that worked great, I don't recall every having an issue with them. I took a break from loading the .44-40 for about 15 years and ended up selling the dies. When I started loading for it again this year I started out with Hornady dies and had nothing but issues with the seating die. I switched to Lee dies and have had zero problem since. Your mileage may vary.