# Batch 2019.01.08 # 4 Terry-length Everyclear grains for 54mm cases, with 0.5 inch cores, cast as two 6-inch-long double grains then cut and trimmed. This was my second time mixing APCP propellant. Again used the 4.5qt mixer and hand packed with no vacuum processing. Same formula as yesterday These grains were cast on 2019-01-08. ## Results ## The updated batch size was just right, there was a bit of excess propellant so we can make density and burn rate measurements after cure. * Grain 1, gross, g casting tube, g net propellant * Grain 2, gross, g casting tube, g net propellant * Grain 3, gross, g casting tube, g net propellant * Grain 4, gross, g casting tube, g net propellant