Sort of, I have an 1874 Sharps chambered in 45-70 but I don’t use black powder in it. After corrosion issues from black powder in my muzzleloader I’m not real keen on using it when I can use smokeless powder for better performance and clean up.
Late response here but I shot bpcr silhouette for years at McDonald PA and Ridgway but haven't shot it in the last 3 or 4 seasons. lots of fun. I shot a roller in 45-70 mostly, but had a Stevens 44 1/2 in 38-55 and 40-60 Maynard.
I haven't been to McDonald yet, but plan on going to the first shoot this spring. I almost went for the last one, but didn't have anyone else to go. will spend the winter getting ready. I would really like to go out to New Mexico in June!