In order to craft cartridge for the revolver, 2 of the needed components, in the whole process, are the nitric acid and ethyl alcohol. However, I read somewhere that you can only make 66 cartrides in total. In other words, you can't resupply infinitely. This means, there are only 2 or 3 of each of the previous mentioned components hidden in the whole map. Maybe there is a way to get or buy from someone more? There is literally no alchemist in the whole map who sells those stuff and replenish every day, just like the street markets?