I was skeptic, but bought one for my 356Winchester, and they do work! Now I have them in all my levergun calibers as well as my handgun calibers. I use my 41mag Lee Factory Crimp Die with my 40-82Winchester. It doesn't know it's not "the right one", however, it works like a charm. The factory crimp die makes an extra step in the handload process, but it really is worth it. Never thought I'd say that. You'll not regret the purchase!
Regards,
Sweetwater