Bolt-Action Firearm
Definition
A firearm whose breech mechanism is cycled manually through movement of a bolt. Turning and straight-pull designs differ, as do locking and feed arrangements. The action label does not establish a universal extractor signature, case-mark depth or a particular manufacturer.
Turning-bolt and straight-pull mechanisms use different movement and locking arrangements. Document the actual contact surfaces and submitted condition. The action category alone does not predict a uniquely identifying extraction mark or establish how strongly a cartridge case was withdrawn.
Related terms
- Combination Gun
- A firearm combining barrels for different ammunition or bore arrangements, such as a rifle and shotgun barrel. Evidence from different barrels can...
- Drilling
- A three-barrel firearm arrangement, commonly combining shotgun and rifle barrels but not limited to one layout or chambering. The actual barrels, selector...
- Pump Action
- A manually operated firearm mechanism cycled by movement of the fore-end, also called slide action. It occurs in rifles and shotguns. The...
- Shot Pattern
- The distribution of shot impacts on a documented target. Firearm, choke, ammunition, distance, target geometry and recovery affect its interpretation. Suitable controlled...
- Shotgun Wad
- A shotshell component or assembly that can separate propellant from the load, seal gases and support or contain shot according to design....