What is the 10 mm Auto?

The 10 mm Auto is a factory pistol cartridge, introduced in 1983.

What bullet diameter does the 10 mm Auto use?

The 10 mm Auto uses a bullet diameter of 0.4 inches.

The 10 mm Auto has a Rimless, Tapered case type.

The 10 mm Auto uses a Large Pistol (.210") primer.

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Cartridges with the same bullet diameter (0.4")