How the Rifle and Handgun Fire

Overview

This lecture explains the firing process of rifles and handguns, detailing the mechanical steps involved from loading to firing a bullet.

Steps in Firing

1. Cartridge Loading

   • A cartridge is inserted into the chamber.

2. Action Closure

   • The action closes, and the firing pin is retracted and held under spring tension.

3. Trigger Activation

   • Squeezing the trigger releases the firing pin, which moves forward with force.
   • The firing pin strikes the primer, causing it to explode.

4. Ignition

   • The spark from the primer ignites the gunpowder in the cartridge.
   • The rapid expansion of gas from the burning powder forces the bullet out.

5. Bullet Propulsion

   • The bullet travels down the barrel, spinning due to the rifling.
   • The bullet’s velocity and the escaping gases produce the characteristic "bang."

Additional Resources

• For more detailed animation and explanation, refer to the video: How a Cartridge Is Fired

Key Points

• Understanding each step is crucial for safe handling and operation of firearms.
• The interaction between mechanical parts and chemical reactions (like the primer explosion and powder ignition) is essential for the firing process.
• Rifling in the barrel is designed to stabilize the bullet’s trajectory by causing it to spin.

Conclusion

• This process is a core aspect of understanding firearm operation and emphasizes the importance of safety and knowledge in handling firearms.

For further study and visual aids, refer to the Hunter Ed website.