To understand how handguns work we first need to know how a bullet works. A bullet consists out of 5 important parts. The bullet (1), the bullet case (2), the propellant (3), the rim (4) and the primer (5). When the striking pin of the gun hits the primer a small chemical reaction will occur that gives a spark to the proppelant. The proppelant will ignite wich will lead to a massive pressure build-up behind the bullet. The pressure will look for a way out, the least resistant captivator is the bullet, so the bullet will be pushed forward through the barrel by the pressure of the explosion behind it.
The pressure behind the bullet in the Colt 1911 is aproximatelly 82,7 MPa!
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