Mystery of Under Weight .45 ACP Cartridges - General Ammunition Discussion - International Ammunition Association Web Forum

A friend was cataloging .45 ACP cartridges into his collection and noticed some odd things about a few rounds such as flat or slightly concave primers without primer seal (slightly domed primer with primer seal is typical of similar headstamped cartridges) and most notably a significant reduction in overall cartridge weight. Similar headstamped FMJ bulleted cartridges showed an overall weight of around 330 grains. The rounds in question weigh about 90 grains LESS. Three of the rounds are dated 4

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