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Upon setting up for the tests, we found that our scale for the black powder was not being accurate. The reading was changing and displaying impossible values. We therefore made the decision to measure volumetrically. This is the vial, with markings for the amounts of powder used:
Our first test was done with powder up to A, which produced an explosion that seemed much louder than it should have been. Therefore all subsequent tests were done with the amount labeled B. The mark at A was at the "0.5" marking pre-made on the plastic, which is presumably milliliters. When a better scale is obtained, we ought to re-check what these volumes are and back-measure the mass of powder.
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