RE: break in
Use the CVA Breechplug & Nipple Grease & coat the plug threads good... then hand-tighten only & check the plug every several shots.... especially with hotter 777 powder. Buy T/C bullets! You start with a 20-pk of Maxi Hunter or Maxi Balls in 275 or 325 grain to smooth out any burrs in the rifling.
Then try two different sabot/bullet packs by T/C like the Mag Sabots, Shockwaves, Big Shots, Cheapshots... etc. The most friendly sabot grain size is the 240 & 250. I usually swab every 2nd shot using 777 powder with a small spray bottle mixed 50-50 with Windex and rubbing alcohol. It dries the bore fast & cuts residue well. My swabbing is always with a bore brush. I bring two ramrods... the other is for seating the bullet on top of the powder with the proper jag. With muzzleloaders... especially in the warm summer months, you should bring two rifles & alternate shooting them so they keep somewhat cool. Let us know how you make out at the range.