What is the .400 BSA Magnum?

The .400 BSA Magnum is a factory rifle cartridge in the Birmingham Small Arms Company family.

What bullet diameter does the .400 BSA Magnum use?

The .400 BSA Magnum uses a bullet diameter of 0.408 inches.

The Birmingham Small Arms Company family includes the .400 BSA Magnum and other related cartridges. Browse the full family on OpenCartridge.

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Family	Birmingham Small Arms Company

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