I own one and love it. So far, everything I've shot out of it has shot well. Sabots and conicals.The only down sideI see to themis that they area little harder to clean than 2nd generation muzzleloaders. Make sure you get yourself a bolt take-down tool. It makes cleaning a lot easier. I would also recommend the Cabela's 209 conversion. Mine shot well with the Remington version but there was a lot of blowback with it.
Sabotloader has owned them longer than I have so I'm sure he can give you a lot more info. It's a great gun though. Careful though, it's addicting