I second Daryl's "emotion": Real Black Powder is the way to go. I started with that modern replacement stuff and just had too many bad ignitions. Plus when I finally succombed and graduated to real Black Powder I was smiling for a week!

Plus and I cannot explain why, but it seemed my accuracy and consistency improved. I prefer the fet recoil too. And I think the cleanup is actually easier.

On all counts real Black Powder is superlative to the replacement stuff.