All,
I did a search and nothing lately popped up. I have done some limited research on the .460 and it definitely sounds interesting. Apparently, one can get .44 magnum ballistics in a 1911 with just a drop in conversion. Clark Custom Guns makes one and it sells at $295.

http://www.clarkcustomguns.com/rowland.htm

Any thoughts or user comments would be appreciated. If I went this route for one of my 1911s, I would probably be reloading my own as $44 for 50 rounds seems just a little steep. Thanks.