It is likely that this cartridge was chosen for logistical reasons as it is also fired by the Zastava M55 anti-aircraft autocannon.
ɪɾ ɪz lˈaɪkli ðæt ðɪs kˈɑːɹtɹɪdʒ wʌz tʃˈoʊzən fɔːɹ lədʒˈɪstɪkəl ɹˈiːzənz ˌæzɪtˌɪz ˈɔːlsoʊ fˈaɪɚd baɪ ðə zæstˈɑːvə ˈɛm fˈɪfti fˈaɪv ˈæntaɪˈɛɹkɹæft ˌɔːɾoʊkˈænən.