Have a look at the Henry Krank repro section in his catalogue or on the website. Dixie Gun Workjs in the USA are good too for an idea of who makes what.
I started with a repro Remington 1858, .44
Now using a repro Colt 1861 Navy, .36 = a MUCH better gun
The funny thing is, after I got the little Colt, the blokes who win all the comps said, "Oh, thats what we use!"
Mmm...thought I
.22 BRNO Mod 2 & 511, .22 SGC V-22, .223 (Armalon), .30-06 M1903A4 & Win 70, .36 Colt Navy 1861, .45 Win 94, .455 New Service. 410 Webley b/a, 12ga: Ithaca 37DSPS & FN A5 & Rem 870 & Win 1897, 10ga "Greylag"