+Dropped one grain at home, big chunk missing and maybe cracks. Decided not
+to use it. That left us with three "good" grains.
+
+The case, nozzle, and closure combination used left me cutting the liner to
+10.250 inches, while Loki specifies 10.375 for their 3-grain case. The total
+available propellant length was 9.459", so I had to trim the three grains
+slightly to fit. The gross masses below were post-trim. Calculating net
+masses will require approximation based on the overall casting tube length
+that remained.
+