Carrying around hundreds of arrows as you have to do in this game is unrealistic. Of course, the wholesale slaughter that is the combat training system is too. To be a hunter in this game is to be a buffalo soldier, killing whole herds for their skins and leaving behind the bulk of the carcass. Such activity could even be considered the capital offense of polluting as so many carcasses get left to rot. I suppose that is what the consumers are for, but one wonders how they can keep up. Isn't it also a capital offence to kill consumers? Good thing the Octarchy is so corrupt.
I think the arrows have a proper weight if you compare with the real ones (0,075 kg each one if I remember correctly).
I'm pretty sure "iron arrow" means an arrow with an iron head.