Ammunition Types Question

I need help sorting out my Ammo problems. I need a way of sorting out Ammo for use on ammo pickups, firing from weapons and general inventory of ammo count.

Player has a Six Shooter that uses “45colt” as its ammo type.
Player has a Lever Action which also uses “45colt” as its ammo.

Player needs to have a combined inventory of ammo type “45colt” and be able to pull from that ammo’s inventory amount during a reload of either weapon. What do I need to create in order to have a common pool of that ammo. Im sure it needs to be its own Blueprint or function.