What happens to the shell casing when a revolver is fired?

Asked by Layton Callahan

The propellant burns, releasing a large volume of gas. The gas pressure drives the bullet down the barrel. The gas pressure also causes the cartridge case to expand, temporarily sealing the breech. All of the expanding gas pushes forward rather than backward.

Selena Aguilera, BA Contributor
Selena Aguilera
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