My advice is: lose the Pyrodex and go with genuine BP. My Tennessee Mountain Rifle is twenty years old and I started with BP. It has a drum, which I really like for maintenance. Then, due to advice from my local store, I bought a can of the other stuff. Bad move.
Just my opinion, but Pyrodex seems to have trouble igniting around a corner. And, I had many, many hangfires with it. I went back to BP and have never had a problem since - period. The Pyro worked well enough in my revolvers so I was able to use it up. But I've never bought any since.