I haven't loaded 800X in nearly 40 years. Back then I used powder dippers, didn't own a chronograph, and just wanted something that went bang in my .38 to punch paper with. About 25 years ago I tried to load that clumpy bulky stuff with modern powder measures - an exercise in futility.

6.2 grains of Power Pistol hits 1225 fps with a 124 JHP, and meters like water through a garden hose.

800X makes good fertilizer. Spread it around your garden.