Posted earlier:
"If you want to use QuickLOAD to estimate loads for your .35 Krag, measure the difference in weight between an empty case and the same one filled to overflowing with water. That will yield a maximum volume from which QL will calculate usable volume for any given bullet and seating depth."

Trying to clarify the procedure -
1. Take an empty case with a spent primer in it.
2. Weigh the case on your powder scale.
3. Fill the case to overflowing with water.
4. Weigh it again.
5. Subtract the empty weight from the water-filled weight.
6. Using the density of liquid water as a constant, QuickLOAD converts its weight to volume (in cubic centimeters).
7. QuickLOAD calculates the volume occupied by the seated bullet and subtracts that from the overflow volume to yield the remaining volume.