There are different types and styles made by T/C which one are you most interested in?
You should post this question on the Muzzleloading Forum up above here on the main page, you probably will get a better response. Good luck.
There a fun gun when you start collecting different barrels for them, I have the orginal Contender, i have a 22, 223 and 45/410 barrel for mine. The make 3 models, regular contender, G2 contender and Encore, G2 contender you can shoot bigger calibers with higher pressures, like 270, 06, guns like that, same with encore. Regular contender is for lower pressure rounds.