I'm working on a scenario set in the early to mid-1800s and would like to know if any of the books contain rules for using percussion (cap and ball) weapons? It seems that most of the books set in the American West are based in the 1870s or later. I'll modify the Gaslight or Classic firearms rules myself if I have to but don't want to re-invent the wheel if there is already something out there. I'd also be interested if anyone has developed their own house rules for these types of weapons. Thanks in advance.