Hello, I'm new to blackpowder shooting and have a question about measuring powder. I recently aquired a 50 cal. inline and while I plan to do the bulk of my shooting using pellets, I would also like to have the option of using loose powder as well. I dont plan to use real deal blackpowder, rather some of the substitutes like Pyrodex or Triple 7. My question is are these powders measured by actual weight or by volumn? Any insight on this will be greatly appreciated. Thanks, da V.