I have not seen the rifles other than pictures. I'm sure they will shoot as accurately as any other muzzleloader rifles on the market today. Most will shoot better than I can and that is the cheap ones too. Once you find out what your rifle likes it is mostly a game of shooting a few different loads and bullets until you find the magic combination for your gun. I would be more concerned about the action of the rifle, trigger crispness and convenience of operation. If you can handle the gun you can find out if everything feels ok for you. Also what is the availablilty of scope mounts if you are going that direction. Sometimes the accessories for the more popular rifles are easier to find. I think I would go with CVA or Traditions over the Rossi but the trigger on the Traditions Pursuit is pretty bad. Hope this helps.