My response was with respect to two different organizations that shoot traditional muzzleloading firearms.
@Sage1, my reenacting unit as seen in my avatar is representative of a British Grenadier company in the French and Indian War. Our King's muskets would have been of the Long Land Pattern and the Pedersoli muskets are Short Land Pattern muskets which did not show up on American shores until the American War of Independance. That's why the Pedersoli
Muskets don't meet our standard, but we do allow them. We didn't use rifles in the grenadier company so any rifle and especially percussion locks would not be allowed.
Now we can talk about my traditional muzzle loading rifle gun club. We are the J P Gemmer Muzzleloading Gun Club and the Pedersoli Missouri and Rocky Mountain rifles, all Traditional Muzzleloading rifles meet the club's standard. We are the host club for the Hawken Classic event. Traditional rifles are welcome. This year (2024) we are in downtown St. Charles and live fire is not allowed by the city.