Thanks to everyone again for the advice. Last night, I poured some very hot soapy water down the barrel twice, let it soak a while (some water very slowly trickled out of the nipple),poured the dirty water out of the barrel, then started trying to move the ramrod. After several minutes, the ramrod came loose, but left the cleaning wad in the barrel. I did not have a rod with the ability to accept a "worm" that was long enough to reach the obstruction and the original ramrod had no threads for adding such an accessory, but only an end that could be used with a cleaning patch. I dismantled the gun, then repeatedly tapped the muzzle end of the barrel on carpet over a concrete floor and the wad finally moved down the barrel far enough to grab with a "worm" on one of my shorter ramrods. This was after trying to shoot the wad out by firing several caps, without any success. After all this, I gave the gun what may have been its most thorough cleaning since the 1860's then coated everything with bore butter. Hopefully, if I ever shoot this gun again, I won't have as much trouble cleaning it.