I use two pellets of 777 and the Hornady SST 250 grain sabots. I'd buy me a nice aluminum range rod, some breech plug grease, and patches. Just use water to clean it. I did buy some T/C muzzleloader solvent but I believe it's just soap. I just bought a 7mm Remington Mag barrel for my Encore too. Just love the gun.
BTW, you can use three pellets of either Pyrodex or 777 but it is a
MAGNUM load. I shoot two 50 grain pellets for an accurate comfortable load.

Oh, and I use Winchester 209 primers but any 209 would do.