Don't forget the Merwin-Hulbert. Slide button (in front of trigger guard) sideways, twist front of frame and barrel, and pull.
Not quite. To open a Merwin Hulbert first you put it on half cock. Then you push the button under the frame
back, not sideways.
Then you rotate the barrel and pull it straight forward to eject the empties. Yes, these are loaded cartridges, but you get the idea. Ideally, if there are some unfired cartridges in the cylinder, they will remain in place while the empties will fall clear. In actual practice it does not always work so well.
To pull the barrel and cylinder off the frame you push in the lever on the side of the barrel and pull them straight forward. But you better be holding the cylinder together with the barrel, or the cylinder is likely to fall to the floor.
But what most people don't realize is you cannot reload a Merwin Hulbert while the cylinder is open. Cannot be done. To reload you have to close up the gun, and reload one chamber at a time through the side loading gate, not much different than a Colt. Except with a Colt you load one, skip one, and load four more. Because of the position of the loading gate on a Merwin Hulbert you have to load two, skip one, then load three more.
Unlike most other Smith and Wesson Top Breaks, with the Schofield model you pull the serpentine, frame mounted latch back, not up.
While I'm nit picking, these guys are called Tip Ups, not bottom breaks. You pull up the latch at the bottom of the barrel, and rotate the barrel up, just like with a Remington double derringer. Hence the name Tip Up.