Ki Question

[Alexander Trafford]

I'm considering having Alex unable to manifest ki in balls or beams to attack, and instead rely on his psychokinesis and require a medium for ki attacks. for example, instead of simply firing a energy ball, he would need to launch a rock imbued with ki for the same effect. I'm considering doing this either permanently, or having him have this quirk temporarily until he fully develops his abilities. The question is, would i be able to use a hand gun and imbue the bullets with energy? I figured i'd ask since you have to purchase energy rifles and augmenting regular, steel bullets with ki seemed like a tricky subject. Firing a handgun and having ki augmented bullets would basically be utilizing a medium to perform 'The Clint Eastwood', but i figured i would check with you guys.