ðə ɡˈʌn fˈaɪɚd ɪts ʃˈɛl æɾə mˈʌzəl vəlˈɑːsᵻɾi ʌv ænd wʌz kɹˈɛdɪɾᵻd wɪððɪ ɐbˈɪləɾi tə pˈɛnɪtɹˌeɪt ɐ nˈɑːmɪnəl ʌv ɹˈɔːt ˈaɪɚn ˈɑːɹmɚɹ æt .
The gun fired its shell at a muzzle velocity of  and was credited with the ability to penetrate a nominal  of wrought iron armour at .