Out of the three revolvers available within the game, Red Dead Redemption 2’s best revolver has to be the Schofield Revolver.
You can purchase it for $84, but if you are looking to save some money, there is a nefarious way of grabbing it.
In the town
of Valentine, peer through the back window of the Doctor’s shop and sneak inside. There you can force the doctor to take you to the back room. There you will take out everyone inside and loot the box sitting on the table in the room. You can customize this weapon and if you buy a second one you can dual wield the weapon early in the game.