I think the point has been made for MrNexus8.
As Tariq said, regardless of weight and velocity, the energy output will always remain the same and that's the reason we have fps limits set with .20s.
It's not the fps we measure for, it's the impact energy of the shot. So using heavier ammo to appear under the limit is a heath risk. You are using a more powerful gun and hiding the fact from the site staff.
Simples.
I see no need to keep the thread open any longer. So to save Charlie any more grief, it's now closed.
