Got some Hercules 2400 so I'm gonna try it in my 44 Mag. I got an OLD reloading book, says to start at 18g and 19.5 is the max, I'm starting at 17g just to be on the safe side.

This powder was made before Hercules was bought by Alliant, I got this can from a trusted associate so I know it was stored in a cool, dry place.