Shots come off from the 1st person camera, so when you are in the 3rd person camera I think one option would be to trace from the 1st person camera straight forward, then get the hit location and feed it to a node like ‘ProjectWorldtoScreen’ to get where on the screen that point is, than move the crosshair there on screen. I haven’t tested this, though.
I guess some people prefer the inverse, something like using ‘DeprojectScreenToWorld’ to get where in the world the crosshair is pointing to, then make the character shoot there. I suspect this is more tricky, but I also never tried this.
I think the cheapest way would be to simply make shots come off from the 3rd person camera while you’re in 3rd person view…