I started with real BP back in the 70's. Tried some Pyrodex once just out of curiosity and to see if I was missing anything. I wasn't. I shoot charges on the heavy end in my percussion Hawken. I don't have a chronograph ( yet ) but by felt recoil and it quickly became apparent the Pyrodex didn't shoot as hard as the real stuff. I've been shooting real BP ever since and that nearly full can of Pyrodex is still in my garage. Most recently I have become addicted to Swiss brand as it shoots harder and significantly flatter than Goex.