Add a controlled reload on jhin.
If you buff him his snipes become broken. if you nerf him he can't do what he was designed to do.
so what he needs is more mechanics. so many times I see jhin miss minions in lane because of his reload or he goes into a teamfight with 2 bullets and doesnt do shit.
allow him to reload when ever he wants to.
if thats too much, make it a longer reload than if he ran out of bullets. the animation could be him throwing out the extra and then reloading.