Ammunition is limited-- Characters ought to reload as they would normally and if they run out of ammo, too bad for them. There are three exceptions, however. the Trigger Happy skill of Gunner doesn't take ammo into account, but a recharge time on the character's end is required. The Magic Bullet skill from Magitek Knight means characters can materialize elemental bullets and this skill does apply to Gunner if both Jobs are equipped together. Finally, the final skill of Archer, Bandanna, does eliminate the need for bullets and reloading and does apply to Gunner and Magitek Knight if equipped.