Axehandle,
I have had 2 MGM .376 Steyr barrels in the past along with a couple of .460's, .500 S&W's etc. The were some pretty hard kickers in the bunch. The Pachmayr grip works great. However, if you like wood, I used a Bullberry grip on my Encore with the above mentioned barrels and recoil wasn't painful at all; it worked really well. The Bullberry grip is "rounder" and wider than the factory grip and distributes recoil in the hand very well IMHO. The only thing that I hate about the Pachmayr grip for the Encore is the sloppy fit to the frame. The G-2 Pachmayr fits wonderfully, I don't know why the Encore grip doesn't. Good luck with whatever you decide!