@Chameloshi: I did notice something about the charge though. The order of the charge color. Green, blue, red. The frequency of the light from the stored energy is going up on the spectrum, then drops. No idea why.

@kamimatsu: I think it's less about science and more about the trope of "the redder it is the stronger/angrier it is". But hey, I don't need to complain because infinite ammo.

Even though overheating would be a real factor for it.