we have two of the older-1st generation inlines from TC[ThunderHawks}. They both have the original #11 nipples. About ten years ago I bought my first and last bottle of pyrodex. Ended up giving it away 3/4 full. That bottle produced the only mis-fires those two guns have ever had and in a consistent manner.
FFg and now F 1/2 G have always worked flawlessly for us.
