I split this question from one of the 45LC threads. There are at least a couple here with 32 H&R Mags, Larry (trotterlg) stubbed one, see FAQs on that, and I think Stimpy had one rechambered and rebored from another barrel. Custom chamberings are easy, they just require some $$ or machine shop skills, I have H&Rs in 405 Winchester, 338-06 A-Square, 6.5x55, 280 Improved, 35 Remington, 30-30AI and 460S&W, 2 were done by hand by me and the rest were done by my gunsmith, Wayne York of Oregunsmithing, I think Wayne did Stimpy's 32 H&R too, among others.
Tim
http://home.earthlink.net/~oregunsmithing/