Ya know the Encore and the Omega are pretty close to being the same gun. The Encore was the gun to end the need for all other guns (One shot one kill) but then for some stupid reason a lot of states made hinged action muzzle loaders illeagel. Probibly thought you could load it from the breech end and didn't check it out before they acted. So as not to loose out on the market in these states the Omega was born.
So in answere to your question I woud go with the barrel for your Encore its pretty much the same thing. If you want you can talk to the good folks at Fox Ridge (TC contractor. In there parking lot) at 1-800-243-4570 or web site www.foxridgeoutfitters.com. good luck with it Mike