Take a look at @Dave Markowitz's Roger and Spencer. Yup, look at the loading lever, the frame, the curve of the grip, shape of the hammer, the front sight and @B P Arn's apology. Not mention the Dixie Gun Works description as a New Model Army 44.
A major reason why the Rogers and Spencer feels different from Colts and Remingtons is that it has a shorter hammer throw. In effect, it's a short action. I bought one by EOA from DGW in London Gray about 10 years ago.
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It's probably my most accurate percussion revolver, next to my Ruger Old Army. I wish I had one of the target models with adjustable sights.
I have never had a cap jam with it. The large dished out areas around the nipples allow cap fragments to fall right out. It handles fouling better than Remingtons due to the bushing on the face of the cylinder. I've fired up to 42 rounds in one session without wiping or adding more lube, and the gun was still running fine.
I use .454 balls on top of 25 - 30 grains of 3Fg, although I've loaded up to 35 grains of 3Fg Triple 7 in it. That load really let you know you were firing a big bore sixgun! I have loaded .457s in it but they take significantly more effort to load and I don't see the need to strain the loading lever doing so. I'll reserve .457s for the Ruger.