Tsuki's idea could work if the ammo doesn't start depleting as soon as the charge is full. The time/ammo can also be adjusted as necessary, as one ammo unit per second sounds excessive, IMO. Making players release their charge early sounds like unnecessary punishment in the case of weapons that require holding down the fire key for it. It would be okay for something like Noise Crush (which doesn't require holding down the fire key) to have the auto release feature however, simply because of how overpowered it is despite the nerf.