70 Potassium permanganate
30 dark pyro aluminum (600 mesh)
More aluminum, brighter flash, less powerful. I used that, and it didn't have a massive report, despite the some 50 grams that were in the end charges along with the stars. The stars and comets came out fine, and the guy said he should have charged admission. Anyhow, I know how permanganate is a very questionable substance, and I made it and used it within 6 hours; I'm not sure exactly how safe it is, but don't do this unless you know what your doing.
- PeteyPyro likes this