Ah... back to the point. Arrows. Tracking arrows on character sheets simply burns holes in the sheet. It is annoying and subject to abuse. Many years ago, I realized that player's will cheat on ammo more than any other thing. Why? Because, it is annoying. To avoid it, I tended to have the players encounter lots of arrows, either because the enemy had them, they were working from a fortification, or they had a natural pause to collect up their used arrows. Some players will want to roll a number to see if the arrow broke, but that is as exciting as my other pet peeve, save vs. drowning.
After a while, I decided to impose a rule that if a player rolled a 1 with ranged weapons, they fumbled the quiver and dropped all of their arrows on the ground. Picking one up, pulling one from a target or returning an arrow shot at the player takes time, a single action. If the character doesn't take any other action, they can refill a quiver in a single round. It seemed reasonable, since the standard has been changed from a quantity to have something or don't have something.
My primary issue with running out of arrows as a DM is, the rules don't take "out of ammo" into account. It is assumed the characters have a functional method of attack, and a certain quality of weapons. But if the requisite ammo is missing, they have neither. Suddenly striping the characters of missile weapons isn't really accounted for in the rules. While a good DM will give players and characters time to reprovision, the DM really can't account for 4 character's missile counts on the fly.
