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I think you may mean a knife with a blood groove, as I am not familiar with anything called a blood gage knife. A blood groove is the colloquial name for the hollowed out strip on some knives. You can see it on the KA-BAR USMC fighting knife, for instance. The proper term for that strip is a fuller. Some people call it a blood groove because they think it is to help drain blood away from the tip of the knife when it is used in combat. Really, a fuller just takes some weight away from a heavy knife without reducing the strength of the blade.

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13y ago

What else can I help you with?