Dropped Dragoon?

[Jappo]

So far I've worked on Uberti, ASM and Armi San Paolo Walkers. Also seen one or two from Palmetto but they might be just an importer. Quality runs from from really good to pretty awful. Every one had a short arbor.

Ah, ok. Never seen them. And Palmetto is a manufacturer. They were known for their replica of the Whitneyville, Spiller and the Colt side hammer.
The early ASM Walker had tiny flat head trigger/bolt and hammer screws.

 

[JT1200R]

Looks like they were trying to make a blunderbuss barrel

 

[TrophyGuy]

My ancient ASM 3rd Dragoon has no barrel crown. They square cut he muzzle and de-burred the edges. Most Colt C&B revolvers were finished like this with a near flat crown instead of the more modern radiused contour. From the picture the barrel looks parallel to the loading lever, an indication that it came through the beating relatively straight. Peering down the bore at the chambers should indicate straightness. I doubt the bore is damaged too far away from the muzzle. You could check this with a plug gauge or any bore sized rod. The edge flares on the muzzle could be removed several ways; filing, saw cutting, or machining in a lathe. How does it shoot? Unless it was spraying lead everywhere it would be tempting to leave it alone and enjoy its battle scars as medals.

 

[ZUG]

IF it was mine I would unscrew the barrel and put it in my lathe and remove about 5/16" to 3/8" of the end then recrown it. The barrel looks like it could use a re-blue also so this is why I suggested my "fix". Since the barrel is in need of rework I would say that the whole gun needs to be reworked also. If you don't have the machinery to do the work find someone that could.

You could try shooting it but I would not until I corrected the issue first.

 

[D Yager]

IF it was mine I would unscrew the barrel and put it in my lathe and remove about 5/16" to 3/8" of the end then recrown it. The barrel looks like it could use a re-blue also so this is why I suggested my "fix". Since the barrel is in need of rework I would say that the whole gun needs to be reworked also. If you don't have the machinery to do the work find someone that could.

You could try shooting it but I would not until I corrected the issue first.

Hate to break it to ya, you ain't unscrewing any thing on that barrel. It's all one piece. It could be mounted in a 4 jaw chuck and centered up but would need additional support from a steady rest or something similar. My question would be why was it being beat with a hammer to begin with. All the other issues need to be addressed as well before much shooting happens. And yes I have the stuff to do it.