Hi,
Reloaded doesn't support true projectile physics currently, but we will be adding a 'flak' system for missiles, etc soon. I imagine the idea of adding something similar to your request would be useful, not just for arrows, but grenade launchers, mortar, etc, as well.
You might want to consider adding this to our
feature creep board.
SC
i7-4770s 3.10ghz - Geforce GTX 650ti