What is the 20 x 102 US M39?

The 20 x 102 US M39 is a rifle cartridge.

What bullet diameter does the 20 x 102 US M39 use?

The 20 x 102 US M39 uses a bullet diameter of 0.783 inches.

The 20 x 102 US M39 has a Rimless, Bottlenecked case type.

Rifle

Case Type	Rimless, Bottlenecked

Dimensions (inches)

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Cartridges with the same bullet diameter (0.783")