What is the .303 Adder?

The .303 Adder is a rifle cartridge.

What bullet diameter does the .303 Adder use?

The .303 Adder uses a bullet diameter of 0.311 inches.

The .303 Adder has a Belted, Bottleneck case type.

Rifle

Case Type	Belted, Bottleneck

Dimensions (inches)

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Cartridges with the same bullet diameter (0.311")