Unless you need or want to go to the higher pressure catridges, as suggested, why fix what ain't broke? The Contender frame with carbine or rifles barrels on it can be very precision shooters, so much so that many of them easily outshoot most production rifles.
Nothing wrong with the Encore either, either in pistol or rifle configuration. I found I could do anything I wanted to do with the Contender wildcats though (pistol or carbine), so sold off all my Encores years ago.