I'd stay away from that timber ridge muzzeloader. You're going to want a break open rifle so you can easily remove the breach plug for cleaning, and so you can easily put a primer in. My friend just got a Thompson Center Impact muzzeloader and he loves it. Great fit and finish, nice features, and its 100% made in the USA.
http://www.cabelas.com/product/Shooting/Black-Powder/Rifles|/pc/104792580/c/104701680/sc/104533380/Thompson47Center-Impact-50-caliber-Rifle-150-Blued-Barrel47Black-Stock/706448.uts?destination=%2Fcatalog%2Fbrowse%2Fshoot ing-black-powder-rifles%2F_%2FN-1100200%2FNs-CATEGORY_SEQ_104533380