Roger - Didn't you ask a similar question a short while back? Maybe it was another barrel?Anyway, I think the 7 8 and 5 8 means a 7/8ths barrel with a 5/8ths plug and no clue as to maker - sorry no real helpThere was a barrel maker ID by lands and grooves thread in the BP Shooting a while back - How many lands and grooves? How did it file? Easy?
7 8 and 5 8 in 1/8 inch stamped numbers under the tang
More important is how smooth the tube is, and will a tite patched ball push evenly thru the bore.Is the barrel outside a milled finish, rolled finish, or sanded?
Quote7 8 and 5 8 in 1/8 inch stamped numbers under the tang Those numbers were put there by the breechplug maker, not the barrel maker. I've got a whole bunch of them marked that way. It's probably an old Numrich or Dixie barrel.