5FA
From PyroGuide
5FA (sometimes written FFFFFA) is high performance black powder that has been corned and screened to show a particle size ranging between 20 and 40 mesh (GOEX standard). See Gunpowder Grades.
5FA (sometimes written FFFFFA) is high performance black powder that has been corned and screened to show a particle size ranging between 20 and 40 mesh (GOEX standard). See Gunpowder Grades.