I have an old adjustable powder measuring cylinder but there are no markings on it indicating what its volume is in the closed position or what each increment indicates. Did a few searches and it looks like these vary on the starting point but mostly have 10 grain increments. I have also read that an empty 30.06 casing will hold close to 90 grains. Anyone else heard of this or have any other tricks so i can get a baseline? Its for a TC HAWKEN .50 cal that i hope to be barkin fire with this afternoon!