Cheddite brand 209s become available quite often. Be careful. They may have a good reputation among shotshell reloaders. But they are very easily pieced in a muzzle loader. I've never had one fail to set off a charge. They're pretty hot and shoot a flame out past the muzzle. But my Traditions Pursuit pierces them 100% of the time. It never pierces CCI, Federal or Winchester. Piercing will eventually erode your firing pin and dirties the breech area pretty good.
Never used 'em, but Brownell's has 'em in stock.
https://www.brownells.com/reloading/primers/shotshell-primers/209-shotshell-primers-prod81658.aspx
