Muslim Indian elephants - shooting capability?

[nikgaukroger]

From the Zafar-Náma by Sharaf-ud-dín 'Ali Yazdi.

"The enemy's great reliance was on his enormous war elephants, 120 in number. They were covered with armour, and on their backs was a kind of litter or cage, in which crossbowmen and discus-throwers were concealed. Sharp poisoned points were fastened firmly to their tusks. Rocket-men (takhsh-afgan) and grenade-throwers (ra'd-andáz) marched by their sides."

Firearms shooting capability?

[AntiokosIII]

+1 in melee for poisoned tusks?

All kidding aside, one could justify shooting from this, it seems to me. Are there other accounts?