Transfer Enchantments

Hello, i'm working on a warlock soldier mod. 

Heres the issue : I want to enchant bullets, and i want the enchantment to be transfered to the gun which will fires it.

i got my bullets

i got a discharged gun that opens GUI which allow player to put the bullet he want (Currently iron bullet and ebony bullet), this will give a gun with modified damage deals in function of the bullet material.

But when i put an enchanted bullet (Blood Tracker enchantment) the gun doesn't herits of the enchantment the bullet got.