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Slamfire

Unintended cartridge ignition during bolt closure, without a discrete trigger pull. Caused by free-floating firing pin inertia or primer over-sensitivity. Produces automatic-like fire from a semi-automatic weapon; must be distinguished from intentional auto-sear modification.

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Related terms

Ball propellantBelted caseBerdan primer pocketBoxer primer pocketChamber pressureCIPExtruded (stick) propellantGilding metalHangfireHeadspaceMaximum average pressure (MAP)Obturation

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