I acquired quite a collection of old pistol and rifle cartridges, and would like to ID each cartridge. Some are easy as they are headstamped with the caliber, and I have a copy of "Ammunition Encyclopedia" by Bussard. The tough ones have no marking what so ever or maybe just the manufacturer and date. The Ammunition Encyclopedia is a great reference and I can verify some of the cartridges with a set of calipers, however it only show the cartridge in a drawing format with dimensions and few if any photos. Any suggestions or references would be appreciated.