Going thru my ammo today and at the bottom of a ammo can was shells that looked like 45 ACP, mic'd the same in dia and length but some had a small crimp about half the way down on the case. Some had F A 32 stamped on the end and others were C C 26,as far as I can find out they are WWll era 45 acp and these numbers were lot numbers. F A stands for Frankford Arsenal 1816-1977, so my question is would you consider this useable ammo or should it be used for display only.