bowiemaker:
Let's see if I can clarify a little.
1) The "rules" do NOT change from posse to posse. NCOWS legal firearms must be used (with temporary exceptions for newbies just getting started). NCOWS rules regarding attire and accessories also must be followed (with the same temporary newbie exceptions).
2) What may change here and there is that NCOWS does allow local clubs some lattitude in experimenting with classes. Nonetheless, I have never head of a shooter being denied the opportunity to shoot a class as defined in the bylaws. For example: At GLFMC, we have decided to only use one pistol (it was really kind of a moot point sine we are 99 percent Working Cowboy shooters anyway). However, if a shooter shows up and wishes to shoot one of the bylaws-defined two-revolver classes, he/she is always accomodated and allowed to do so.
3) That may sound confusing, but it really is not that complicated. Local clubs are pretty much expected to offer any NCOWS-approved class provided someone wants to shoot in it. The difference is that local clubs are also free to experiment with additional class types, if they so choose, PROVIDED NCOWS rules on firearms, attire and accessories are followed.
4) If you are NCOWS legal according to the bylaws, then you are NCOWS legal no matter what NCOWS match you attend.
Does that help at all?