I know nothing about the performance of the Blue Ridge guns but for about the same dollars you could get a proven Lyman Great Plains rifle in .54.
Looks a lot nicer than the BR rifles.
If you look around, you can find one at comparable cost:
http://www.google.com/search?as_q=&n...T+PLAINS+RIFLE
http://www.outdoorsuperstore.com/pro...T+PLAINS+RIFLE
http://www.trackofthewolf.com/(S(522...artNum=AAC-754