Persistent LodestoneConsumable 7
Source Pathfinder Guns & Gears
Price 55 gp
Weight negligible
Usage affixed to a firearm with a reload of 1
Activate 
envision
Trigger You miss on a ranged Strike with the affixed weapon using an ordinary 0-level piece of ammunition.
This small magnetite block is attached to the barrel of the firearm by a thin metal wire drilled through a hole in its center. When you activate the lodestone, the ammunition from your missed shot is immediately recalled to your firearm, allowing you to fire again without reloading.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
ConjurationEffects and magic items with this trait are associated with the conjuration school of magic, typically involving summoning, creation, teleportation, or moving things from place to place.
ConsumableAn item with this trait can be used only once. Unless stated otherwise, it's destroyed after activation. Consumable items include alchemical items and magical consumables such as scrolls and talismans. When a character creates consumable items, they can make them in batches of four.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.
TalismanA talisman is a small object affixed to armor, a shield, or a weapon (called the affixed item). You must be wielding or wearing an item to activate a talisman attached to it. Once activated, a talisman burns out permanently.