Revolver with Silencer

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In addition, the more powerful the gun and ammo are, the more chance the bullet will travel at supersonic speed and produce that loud ballistic crack. A high-powered, supersonic bullet can’t be completely silenced because it has literally created a tiny sonic boom as it travels from the barrel.

To illustrate these phenomena, forensic researchers used a special imaging camera. The man in the photo below has discharged a .44 Magnum revolver. Two spherical shock waves are seen. One is a bright flash and cloud of gunpowder combustion centered at the gun’s muzzle (the muzzle blast); the other is centered near the cylinder and envelops the hands of the shooter (around the body of the gun and chamber/cylinder). The supersonic bullet is visible at the far left. This kind of split-split-second photography helps forensics experts understand the transfer of gunpowder traces to the hands when firing a gun. It also allows us to “see” the muzzle flash, the gases exploding out, and the flight of the bullet, all of which aren’t ordinarily visible to the naked eye.

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