What is the .45 Thompson Auto?

The .45 Thompson Auto is a rifle cartridge.

What bullet diameter does the .45 Thompson Auto use?

The .45 Thompson Auto uses a bullet diameter of 0.451 inches.

The .45 Thompson Auto has a Rimless, Tapered case type.

Rifle

Case Type	Rimless, Tapered

Dimensions (inches)

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Cartridges with the same bullet diameter (0.451")