I've came across some .45 ammo in a cardboard box of 20. The box says" 20 cartridges, pistol ball, caliber 45 M1 1911" then has " ammuniton Lot WCC1087, Western Cartridge company" It appears to be a little old as its also got dust balls in each seperation inside. Anyone have any idea as to how old this ammo is? Only thing stamped on the head is "wcc 41". thanks