http://www.lodgewood.com/ is a good place to start. THough they haven't updated their consignment page in a while. Probably well worth giving them a call as they have often had good used arms for under $500. http://www.n-ssa.org/ often has members elling arms. http://www.regtqm.com/ they have a good selection as well.
Also be aware many events will not allow the M1841 on the field as it is not a 3 bander... so a P53 might be a better choice. That said I am quite fond of my M1841... prefer it to the Enfield in fact.
Good Luck
__________________ Few take the trouble to understand or to view the American scene with perspective. And we Americans love to find ourselves guilty of something. However, it is never I who am guilty, but those other Americans, the past or present government or the other political party. Americans almost never find other countries guilty. It is always ourselves or our fancied influence in other countries. Louis L'amour |