Goex FFF...

As mentioned it has the lowest ignition point...Pyrodex was developed with a higher ignition point (by taking the sulfer out of it) so it could be shipped cheaper and not have to be stored in a fire proof safe...777 has a higher ignition point than Pyrodex...Go with more reliable ignition and keep your powder dry...

I've had my flinter in a complete downpour and have it still fire...It's just about learning what you are doing...