The .375 Holland & Holland Magnum, often abbreviated to .375 H&H Magnum, is a medium-bore rifle cartridge introduced in 1912 by London based gunmaker Holland & Holland. The .375 H&H cartridge featured a belt to ensure the correct headspace, which otherwise might be unreliable, given the narrow shoulder of the cartridge case.
The .375 Holland & Holland Magnum, often abbreviated to .375 H&H Magnum, is a medium-bore rifle cartridge introduced in 1912 by London based gunmaker Holland & Holland. The .375 H&H cartridge featured a belt to ensure the correct headspace, which otherwise might be unreliable, given the narrow shoulder of the cartridge case.
Source: Wikipedia ".375 H&H Magnum" · CC BY-SA 4.0
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