PJ,
sounds like a fun project, I've got interest in doing the same. I've fired the .480 in the Raging Bull and thought it was entirely manageable in the big ported revolver with the awesome grip. If you have any aversion to recoil, I would avoid this altogether. The .44 Mag with full house 300gr loads in a 10" barrel is unpleasant in my opinion, and this would be much more so. I shoot 1300 fps 300+ gr loads in a .45 Bisley with no problems, but I consider that 10" 44 in a Contender to be brutal. The extra weight of the Encore could be a help. My bet is it's downright brutal with the heavy bullets. Let us know how it goes with this, I'm interested to hear.