Hmmmm, I'd give T\C a call on that one, or a local T\C dealer that deals heavy in T\C's. My prohunter barrel is tapered and the forarm is built for that taper. If your going to use a forarm for a bull barrel, your probably going to have to put a shim under the front screw.
And then, I don't know if the screws are the same distances apart on the PH barrels as the Encore barrels. (I know they will fit each other's frames).
Dave.