Different from semi-automatic or fully automatic firearms with automatic ammunition supply, bolt bolt is also called manual ammunition supply, which means that the shooter needs to use both hands to complete the operation of sending bullets into the chamber and using them up after shooting. The process by which a shell is ejected from a gun bore.
Because each magazine is manually loaded and ejected, the firing rate of this gun is much lower than that of semi-automatic or full-automatic guns with automatic ammunition supply.
However, compared with the automatic ammunition supply gun, the internal ballistics of manual guns are not affected by the automatic recoil bolt, the chamber pressure is easier to maintain stability, and the shooting accuracy has great advantages, so it is more popular when there is no requirement for shooting speed.
The bolt bolt first appeared on the M 184 1 Dreiser needle gun, and was later adopted by the French M 1866 Chasebol rifle. Mao Se Brothers started on the eve of the Franco-Prussian War in 1867. The pull rifle was patented in 1868, adopted by the Prussian army in 187 1 and finally finalized as Mao Se 187 1 rifle.
There are three kinds of mainstream rifles that use bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt-bolt.
The Lee-Enfield model is locked by the tenon in the middle of the bolt. When the lock tongue is unlocked, the minimum rotation angle is 60 degrees, which is labor-saving, easy to wear and has the risk of accidents. The tenon and locking groove of the sleeve are used at the same time. When the gun handle is unlocked, the 90-degree rotation angle is the same as that of the musket. Therefore, the operation needs more strength and is the safest.
In fact, it is locked by bolt locking tenon or sleeve locking groove or both. Mao Se rotary bolt machine has original sleeve locking slot locking. It is used in Mao Se 187 1 rifle. Gew 98 rifle adopts the lock of bolt lock, which is still the most common latch bolt design in the world and is widely used in various countries.