Schießwolle was not gun cotton (Schiessbaumwolle) but NiNa.Az
According to Wikipedia (i know...): "Es handelt sich um eine gießbare Mischung aus 67 %
Trinitrotoluol (TNT), 8 %
Hexanitrodiphenylamin und 25 %
Aluminium"
It was mainly used in (ship)torpedos and sea mines.