fˈɜːðɚ mˌɑːdɪfɪkˈeɪʃənz ʌv ɪts bˈɜːnɪŋ ɹˈeɪt wɜːɹ ɐtʃˈiːvd baɪ ʃˈeɪpɪŋ ðə pˈaʊdɚ ɡɹˈeɪnz ˌɪntʊ pɹɪsmˈæɾɪk ʃˈeɪps, tˈɪpɪkli sˈɪŋɡəlpˈɜːfɚɹˌeɪɾᵻd hˈɛksɐɡənəl ɔːɹ ˈɑːktɐɡənəl pɹˈɪzəmz.
Further modifications of its burning rate were achieved by shaping the powder grains into prismatic shapes, typically single-perforated hexagonal or octagonal prisms.