RE: using a crossbow?
Actually firearms used the stored "chemical energy" of the powder that is released as it burns.
All bows, (crossbows included), used the stored "mechanical energy" of the limbs that are "released".
And hand thrown, or hand held weapons actually use the energy of the person weilding the weapon.
Maybe we should have three separate seasons?
-Chemical energy weapons
-Mechanical energy weapons
-Human energy weapons
Makes about as much sense as the balance of "this argument"!