I've loaded a limited amount up in 45LC. I shot them out of a 460 though.
Accuracy was better than what I was getting with 250gr XTP's and 250 Hardcasts, nothing amazing, but not bad by any means. Shooting them out of an actual 45LC would probably yield better results. Recoil was pretty modest as well.
+1 to the great accuracy out of a 460 load. I've found the FTX bullets work very well in all my guns (44 mag, 45-70, 500, 460, and hopefully soon a 357).